Update dependency prometheus_client to v0.21.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
prometheus_client	==0.8.0 -> ==0.21.0

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Release Notes

prometheus/client_python (prometheus_client)

v0.21.0: 0.21.0 / 2024-09-20

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What's Changed

[CHANGE] Reject invalid (not GET or OPTION) HTTP methods. #​1019
[ENHANCEMENT] Allow writing metrics when holding a lock for the metric in the same thread. #​1014
[BUGFIX] Check for and error on None label values. #​1012
[BUGFIX] Fix timestamp comparison. #​1038

v0.20.0: 0.20.0 / 2024-02-14

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What's Changed

• [CHANGE/BUGFIX] Update OpenMetrics Content Type to 1.0.0. #​997
• [FEATURE] Enable graceful shutdown for start_{http,wsgi}_server by returning the server and thread. #​999
• [FEATURE] Allow resetting counter metrics. #​1005
• [BUGFIX] wsgi server: address family discovery is not quite right. #​1006

v0.19.0: 0.19.0 / 2023-11-20

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What's Changed

[FEATURE] support HTTPS/TLS in start_http_server. #​946
[BUGFIX] fix: error in determining timestamp less than. #​979

v0.18.0: 0.18.0 / 2023-10-30

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[CHANGE] Remove support for Python versions < 3.8. #​936
[FEATURE] Add mostrecent aggregation to Gauge. #​967
[ENHANCEMENT] Typing improvements. #​935, #​970
[ENHANCEMENT] Allow enabling or disabling _created metrics from code. #​973
[BUGFIX] Change #!/usr/bin/python to #!/usr/bin/env python in remaining places. #​945

v0.17.1: 0.17.1 / 2023-07-19

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[BUGFIX] Use #!/usr/bin/env python instead of #!usr/bin/python in bridge/graphite.py. #​928

v0.17.0: 0.17.0 / 2023-05-24

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[ENHANCEMENT] Add additional typing. #​887, #​903
[BUGFIX] Fix typo in python_gc_objects_collected metadata. #​894
[BUGFIX] Do not include .pyc files in the build wheel. #​906

v0.16.0: 0.16.0 / 2023-01-23

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[FEATURE] Support HELP text in multiprocess mode. #​804
[ENHANCEMENT] Reduce the mmap minimum size. #​853
[BUGFIX] Use the correct OpenMetrics encoder when application/openmetrics-text is requested in ASGI apps. #​864
[BUGFIX] Allow Prometheus format parser to handle a missing space after labels. #​872

v0.15.0: 0.15.0 / 2022-10-13

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[CHANGE] Remove choose_formatter. choose_formatter only existed for v0.14.x and was deprecated in v0.14.1. https://github.com/prometheus/client_python/pull/846
[FEATURE] Support TLS auth when using push gateway with tls_auth_handler. https://github.com/prometheus/client_python/pull/841
[ENHANCEMENT] Add sum, livemin, and livemax multiprocess modes for Gauges. https://github.com/prometheus/client_python/pull/794

v0.14.1: 0.14.1 / 2022-04-08

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[BUGFIX] Revert choose_encoder being renamed to choose_formatter to fix a breaking change. For the 0.14.x release cycle choose_formatter will still exist, but will be removed in 0.15.0. #​796

v0.14.0: 0.14.0 / 2022-04-05

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[ENHANCEMENT] Continued typing improvements and coverage. #​759, #​771, #​781
[ENHANCEMENT] Allow binding to IPv6 addresses. #​657
[ENHANCEMENT] Negotiate gzip content-encoding, enabled by default. #​776
[ENHANCEMENT] Allow disabling _created metrics via the PROMETHEUS_DISABLE_CREATED_SERIES environment variable. #​774
[BUGFIX] Correct minor typo in exception raised when exemplar labels are too long. #​773

v0.13.1: 0.13.1 / 2022-01-28

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[BUGFIX] Relax some type constraints that were too strict. #​754, #​755, #​756, #​758
[BUGFIX] Explicitly export functions with __all__. #​757

v0.13.0: 0.13.0 / 2022-01-25

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[CHANGE] Drop support for Python versions 2.7, 3.4, and 3.5. #​718
[FEATURE] Support adding labels when using .time() #​730
[ENHANCEMENT] Begin to add type hints to functions. #​705
[ENHANCEMENT] Improved go-to-declaration behavior for editors. #​747
[BUGFIX] Remove trailing slashes from pushgateway URLS. #​722
[BUGFIX] Catch non-integer bucket/count values. #​726

v0.12.0: 0.12.0 / 2021-10-29

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[FEATURE] Exemplar support (excludes multiprocess) #​669
[ENHANCEMENT] Add support for Python 3.10 #​706
[ENHANCEMENT] Restricted Registry will handle metrics added after restricting #​675, #​680
[ENHANCEMENT] Raise a more helpful error if a metric is not observable #​666
[BUGFIX] Fix instance_ip_grouping_key not working on MacOS #​687
[BUGFIX] Fix assertion error from favicion.ico with Python 2.7 #​715

v0.11.0: 0.11.0 / 2021-06-01

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[CHANGE] Specify that the labelvalues argument on metric constructors is internal by renaming it to _labelvalues. If you are affected by this change, it is likely that the metric was not being registered. #​660
[BUGFIX] write_to_textfile will overwrite files in windows. If using python 3.4 or newer the replace will be atomic. #​650

v0.10.1: 0.10.1 / 2021-04-08

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[BUGFIX] Support lowercase prometheus_multiproc_dir environment variable in mark_process_dead. #​644

v0.10.0: 0.10.0 / 2021-04-02

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• [CHANGE] Python 2.6 is no longer supported. #​592
• [CHANGE] The prometheus_multiproc_dir environment variable is deprecated in favor of PROMETHEUS_MULTIPROC_DIR. #​624
• [FEATURE] Follow redirects when pushing to Pushgateway using passthrough_redirect_handler. #​622
• [FEATURE] Metrics support a clear() method to remove all children. #​642
• [ENHANCEMENT] Tag support in GraphiteBridge. #​618

v0.9.0: 0.9.0 / 2020-11-26

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[ENHANCEMENT] Add support for python3.9 (#​600)
[ENHANCEMENT] Various updates for latest OpenMetrics draft spec (#​576 #​577)

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