Bump actions/download-artifact from 5 to 6 in /.github/workflows #10738

Job	Run time
analyze-other (actions)	51s
check-codeql-versions	34s
analyze-other (python)	59s
analyze-javascript (ubuntu-24.04)	4m 10s
analyze-javascript (ubuntu-24.04, linked)	4m 6s
analyze-javascript (ubuntu-22.04)	4m 32s
analyze-javascript (ubuntu-22.04, linked)	4m 18s
analyze-javascript (windows-2022, linked)	5m 57s
analyze-javascript (windows-2022)	5m 22s
analyze-javascript (windows-2025, linked)	5m 39s
analyze-javascript (macos-13, linked)	7m 41s
analyze-javascript (macos-13)	16m 29s
analyze-javascript (macos-15, linked)	8m 5s
analyze-javascript (macos-14, linked)	8m 47s
analyze-javascript (macos-15)	6m 33s
analyze-javascript (windows-2025)	5m 36s
analyze-javascript (macos-14)	10m 20s
	1h 39m 59s

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