Update changelog for gz-cmake 4.0.0, with an estimated release date just a little before the community meeting. I grouped some changes and removed a reverted PR.
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🎉 New feature
Part of https://github.com/gazebo-tooling/release-tools/issues/1092
Summary
Update changelog for gz-cmake 4.0.0, with an estimated release date just a little before the community meeting. I grouped some changes and removed a reverted PR.
Test it
Compare to https://github.com/gazebosim/gz-cmake/compare/gz-cmake3_3.5.3...main
Checklist
codecheckpassed (See contributing)Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining
Signed-off-bymessages.