Update default bundle to 2.20.6 #9329

Job	Run time
check-codeql-versions	57s
analyze-actions	1m 1s
analyze-javascript (ubuntu-20.04, linked)	4m 15s
analyze-javascript (ubuntu-20.04)	3m 59s
analyze-javascript (macos-14, linked)	5m 33s
analyze-javascript (ubuntu-22.04, linked)	4m 0s
analyze-javascript (windows-2019, linked)	8m 21s
analyze-javascript (macos-13)	9m 17s
analyze-javascript (windows-2022)	6m 11s
analyze-javascript (macos-14)	5m 31s
analyze-javascript (ubuntu-22.04)	4m 1s
analyze-javascript (windows-2019)	6m 42s
analyze-javascript (windows-2022, linked)	6m 12s
analyze-javascript (macos-13, linked)	9m 15s
	1h 15m 15s

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