Bump once_cell from 1.21.3 to 1.21.4 #10054

Job	Run time
Test Homebrew Formula (macOS)	4m 21s
build-linux-musl (1.88)	10m 9s
udeps	8m 56s
build-linux-musl (stable)	4m 3s
Lints	4m 15s
build-linux-arm (nightly)	18m 41s
Changelog Test	5s
build-apple-x86 (stable)	7m 17s
build-linux-arm (stable)	19m 40s
build-apple-x86 (1.88)	5m 45s
build-apple-x86 (nightly)	5m 22s
build-linux-arm (1.88)	20m 39s
build-linux-musl (nightly)	10m 3s
build (macos-latest, stable)	8m 13s
build (macos-latest, nightly)	9m 5s
build (ubuntu-latest, stable)	8m 13s
build (macos-latest, 1.88)	6m 27s
build (ubuntu-latest, 1.88)	8m 50s
build (windows-latest, stable)	28m 15s
build (windows-latest, nightly)	26m 19s
build (windows-latest, 1.88)	26m 56s
build (ubuntu-latest, nightly)	8m 33s
	4h 10m 7s

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