Prepare for 8.3.0 release

[adityapande-1995]

Signed-off-by: Aditya [email protected]

🎈 Release

Preparation for 8.3.0 release.

Comparison to 8.2.0: ignition-msgs8_8.2.0...aditya/8.3.0

Checklist

• Asked team if this is a good time for a release
• There are no changes to be ported from the previous major version
• No PRs targeted at this major version are close to getting in
• Bumped minor for new features, patch for bug fixes
• Updated changelog
• Updated migration guide (as needed)
• Link to PR updating dependency versions in appropriate repository in ignition-release (as needed):

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #237 (3b2945b) into ign-msgs8 (0d07350) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           ign-msgs8     #237   +/-   ##
==========================================
  Coverage      85.38%   85.38%           
==========================================
  Files              9        9           
  Lines            951      951           
==========================================
  Hits             812      812           
  Misses           139      139           

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[scpeters]

DCO seems broken; I"ll just merge

[adityapande-1995]

Not sure what is going on with the DCO bot