Prepare for 6.0.1 patch release

[iche033]

🎈 Release

Preparation for 6.0.1 release.

Comparison to 6.0.0: ignition-rendering6_6.0.0...prep_6.0.1

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 ignition-release (as needed):

Note to maintainers: Remember to use Squash-Merge

[codecov]

Codecov Report

Merging #449 (bf3782d) into ign-rendering6 (dd4b520) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head bf3782d differs from pull request most recent head 81a62b0. Consider uploading reports for the commit 81a62b0 to get more accurate results

@@               Coverage Diff               @@
##           ign-rendering6     #449   +/-   ##
===============================================
  Coverage           53.49%   53.49%           
===============================================
  Files                 192      192           
  Lines               19560    19560           
===============================================
+ Hits                10463    10464    +1     
+ Misses               9097     9096    -1     

Impacted Files	Coverage Δ
...e/ignition/rendering/base/BaseGaussianNoisePass.hh	100.00% <0.00%> (+3.33%)	⬆️

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