Add changelog entry for v3.28.20 backport #9829

Job	Run time
analyze-actions	49s
check-codeql-versions	33s
analyze-javascript (ubuntu-22.04, linked)	4m 7s
analyze-javascript (ubuntu-24.04)	4m 4s
analyze-javascript (ubuntu-22.04)	4m 2s
analyze-javascript (windows-2022)	6m 54s
analyze-javascript (windows-2022, linked)	5m 40s
analyze-javascript (windows-2025, linked)	6m 18s
analyze-javascript (macos-15, linked)	7m 1s
analyze-javascript (macos-15)	6m 39s
analyze-javascript (macos-13)	7m 30s
analyze-javascript (windows-2025)	6m 23s
analyze-javascript (macos-14)	5m 54s
analyze-javascript (ubuntu-24.04, linked)	4m 4s
analyze-javascript (macos-13, linked)	7m 22s
analyze-javascript (macos-14, linked)	6m 14s
	1h 23m 34s

Provide feedback