Prepare for 7.4.0 Release

[azeey]

🎈 Release

Preparation for 7.4.0 release.

Comparison to 7.3.0: gz-math7_7.3.0...gz-math7

Needed by <PR(s)>

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 gazebo-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

All modified and coverable lines are covered by tests ✅

Project coverage is 94.11%. Comparing base (fe745ca) to head (82d7b18).

Additional details and impacted files

@@            Coverage Diff            @@
##           gz-math7     #583   +/-   ##
=========================================
  Coverage     94.11%   94.11%           
=========================================
  Files           146      146           
  Lines          9804     9804           
=========================================
  Hits           9227     9227           
  Misses          577      577           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.