Only reindex documents if declarations are being modified #12175

Job	Run time
build_node (ubuntu-latest)	1m 51s
build_node (macos-latest)	2m 3s
Ruby 3.1 on ubuntu-latest	12m 3s
lint_node	28s
build_node (windows-latest)	5m 55s
Ruby 3.2 on ubuntu-latest	11m 6s
Ruby 3.3 on ubuntu-latest	11m 52s
lint_ruby	22s
spelling	19s
Ruby 3.4 on ubuntu-latest	11m 12s
Ruby 3.1 on macos-latest	8m 8s
Verify Jekyll website builds	6s
Ruby 3.2 on macos-latest	6m 41s
Ruby 3.3 on macos-latest	6m 11s
Ruby 3.4 on macos-latest	7m 13s
Ruby 3.1 on windows-latest	24m 57s
Ruby 3.2 on windows-latest	22m 56s
Ruby 3.3 on windows-latest	23m 41s
Ruby 3.4 on windows-latest	24m 41s
	3h 1m 45s

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