Add release note for Foxy patch release 7 (backport #2262)

[mergify]

This is an automatic backport of pull request #2262 done by Mergify.
Cherry-pick of 01861c8 has failed:

On branch mergify/bp/galactic/pr-2262
Your branch is up to date with 'origin/galactic'.

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	both modified:   source/Releases/Release-Foxy-Fitzroy.rst

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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