[CI] fixes

[avtolstoy]

Description

1. Fixes a problem with Slack notifications (there is a limit of 10 section items)
2. Fixes issue with Artifacts build step for branches whose name starts with letters after t e.g. w.

Tested in #2560

Steps to Test

N/A

Example App

N/A

References

N/A

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Completeness

• User is totes amazing for contributing!
• Contributor has signed CLA (Info here)
• Problem and Solution clearly stated
• Run unit/integration/application tests on device
• Added documentation
• Added to CHANGELOG.md after merging (add links to docs and issues)

[scott-brust]

FYI I manually started CI and will approve when the build passes

[avtolstoy]

Thanks, Scott. This resolves the CI problem for #2563 as well.

[avtolstoy]

@scott-brust FYI the backport should not include Tracker M/P2 stuff, so only release-publish.sh fix is required.

[scott-brust]

@scott-brust FYI the backport should not include Tracker M/P2 stuff, so only release-publish.sh fix is required.

👍 will pull this into a 4.x backport PR soon as its merged