ci: only publish after releases are created

[JamieDanielson]

Which problem is this PR solving?

• closes [ci] newly created packages are published before the release PR is merged #2020

Short description of the changes

• Add conditional checks to steps that require a release to be created first.

According to release-please-action Outputs section releases_created is true if any release was created, false otherwise. This should be the right option compared to the previous attempt that used release_created which is only true if a root component release was created, false otherwise. Thanks for the tip @pichlermarc ! Hopefully this one works better. 🤞

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.45%. Comparing base (dfb2dff) to head (ea228af).
Report is 91 commits behind head on main.

❗ Current head ea228af differs from pull request most recent head fe6da36. Consider uploading reports for the commit fe6da36 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2160      +/-   ##
==========================================
- Coverage   90.97%   90.45%   -0.53%     
==========================================
  Files         146      147       +1     
  Lines        7492     7576      +84     
  Branches     1502     1574      +72     
==========================================
+ Hits         6816     6853      +37     
- Misses        676      723      +47     

see 25 files with indirect coverage changes