Bump pyyaml from 5.3.1 to 5.4 in /requirements

requirements/dev.txt

@@ -4,46 +4,110 @@
 #
 #    pip-compile requirements/dev.in
 #
---index-url https://pypi.tuna.tsinghua.edu.cn/simple
---trusted-host tsinghua.edu.cn
-
-aniso8601==8.0.0          # via flask-restful
-appdirs==1.4.4            # via virtualenv
-atomicwrites==1.4.0       # via pytest
-attrs==20.2.0             # via jsonschema, pytest
-click==7.1.2              # via -r requirements/dev.in, flask
-colorama==0.4.3           # via pytest, tox
-distlib==0.3.1            # via virtualenv
-filelock==3.0.12          # via tox, virtualenv
-flasgger==0.9.5           # via -r requirements/dev.in
-flask-pymongo==2.3.0      # via -r requirements/dev.in
-flask-restful==0.3.8      # via -r requirements/dev.in
-flask-script==2.0.6       # via -r requirements/dev.in
-flask-sqlalchemy==2.4.4   # via -r requirements/dev.in
-flask==1.1.2              # via -r requirements/dev.in, flasgger, flask-pymongo, flask-restful, flask-script, flask-sqlalchemy
-iniconfig==1.0.1          # via pytest
-itsdangerous==1.1.0       # via flask
-jinja2==2.11.2            # via flask
-jsonschema==3.2.0         # via flasgger
-markupsafe==1.1.1         # via jinja2
-mistune==0.8.4            # via flasgger
-more-itertools==8.5.0     # via pytest
-packaging==20.4           # via pytest, tox
-pluggy==0.13.1            # via pytest, tox
-py==1.9.0                 # via pytest, tox
-pymongo==3.11.0           # via flask-pymongo
-pyparsing==2.4.7          # via packaging
-pyrsistent==0.17.3        # via jsonschema
-pytest==6.0.2             # via -r requirements\tests.in
-python-dateutil==2.8.1    # via -r requirements/dev.in
-pytz==2020.1              # via flask-restful
-pyyaml==5.3.1             # via flasgger
-six==1.15.0               # via flasgger, flask-restful, jsonschema, packaging, python-dateutil, tox, virtualenv
-sqlalchemy==1.3.19        # via flask-sqlalchemy
-toml==0.10.1              # via pytest, tox
-tox==3.20.0               # via -r requirements/dev.in
-virtualenv==20.0.31       # via tox
-werkzeug==1.0.1           # via flask
+aniso8601==8.0.0
+    # via flask-restful
+appdirs==1.4.4
+    # via virtualenv
+attrs==20.2.0
+    # via
+    #   jsonschema
+    #   pytest
+click==7.1.2
+    # via
+    #   -r dev.in
+    #   flask
+    #   pip-tools
+distlib==0.3.1
+    # via virtualenv
+filelock==3.0.12
+    # via
+    #   tox
+    #   virtualenv
+flasgger==0.9.5
+    # via -r dev.in
+flask-pymongo==2.3.0
+    # via -r dev.in
+flask-restful==0.3.8
+    # via -r dev.in
+flask-script==2.0.6
+    # via -r dev.in
+flask-sqlalchemy==2.4.4
+    # via -r dev.in
+flask==1.1.2
+    # via
+    #   -r dev.in
+    #   flasgger
+    #   flask-pymongo
+    #   flask-restful
+    #   flask-script
+    #   flask-sqlalchemy
+iniconfig==1.0.1
+    # via pytest
+itsdangerous==1.1.0
+    # via flask
+jinja2==2.11.2
+    # via flask
+jsonschema==3.2.0
+    # via flasgger
+markupsafe==1.1.1
+    # via jinja2
+mistune==0.8.4
+    # via flasgger
+more-itertools==8.5.0
+    # via pytest
+packaging==20.4
+    # via
+    #   pytest
+    #   tox
+pep517==0.10.0
+    # via pip-tools
+pip-tools==6.0.1
+    # via -r dev.in
+pluggy==0.13.1
+    # via
+    #   pytest
+    #   tox
+py==1.9.0
+    # via
+    #   pytest
+    #   tox
+pymongo==3.11.0
+    # via flask-pymongo
+pyparsing==2.4.7
+    # via packaging
+pyrsistent==0.17.3
+    # via jsonschema
+pytest==6.0.2
+    # via -r tests.in
+python-dateutil==2.8.1
+    # via -r dev.in
+pytz==2020.1
+    # via flask-restful
+pyyaml==5.4
+    # via flasgger
+six==1.15.0
+    # via
+    #   flasgger
+    #   flask-restful
+    #   jsonschema
+    #   packaging
+    #   python-dateutil
+    #   tox
+    #   virtualenv
+sqlalchemy==1.3.19
+    # via flask-sqlalchemy
+toml==0.10.1
+    # via
+    #   pep517
+    #   pytest
+    #   tox
+tox==3.20.0
+    # via -r dev.in
+virtualenv==20.0.31
+    # via tox
+werkzeug==1.0.1
+    # via flask
 
 # The following packages are considered to be unsafe in a requirements file:
+# pip
 # setuptools