Bump Anthropic from 12.17.0 to 12.20.0 #2767

Job	Run time
build (ubuntu-latest, Debug)	10m 52s
build (macos-latest, Debug)	9m 27s
build (windows-latest, Release)	16m 6s
build (windows-latest, Debug)	15m 20s
build (ubuntu-latest, Release)	10m 59s
build (macos-latest, Release)	10m 4s
publish-coverage	-1s
	1h 12m 47s

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