Prepare for 2.5.0 release

[azeey]

🎈 Release

Preparation for 2.5.0 release.

Comparison to 2.5.0-pre1: ignition-physics2_2.5.0-pre1...ign-physics2

Needed by gazebosim/gz-sim#847, gazebosim/gz-sim#869

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

[codecov]

Codecov Report

Merging #306 (67358fa) into ign-physics2 (07b8216) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           ign-physics2     #306   +/-   ##
=============================================
  Coverage         82.84%   82.84%           
=============================================
  Files               108      108           
  Lines              4243     4243           
=============================================
  Hits               3515     3515           
  Misses              728      728           

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