Prepare the 1.30.2rc3 release notes. (#11327)
Prepare the 1.30.2rc3 release notes. (#11327)

Work towards #11305
pantsbuild/pants,jsirois/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,jsirois/pants,benjyw/pants,benjyw/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,benjyw/pants,jsirois/pants