Allow sharding for Dagger compiler tests. #3914

Job	Run time
Validate Dagger version	18s
Bazel tests	1h 26m 27s
Bazel build	5m 18s
Test Hilt Gradle plugin	13m 21s
Artifact Java local tests	7m 19s
Artifact Android emulator tests (API 30)	17m 16s
Artifact Android local tests (AGP 7.0.0)	12m 31s
Build Hilt Gradle plugin against latest AGP version	0s
Artifact Android local tests (AGP 7.1.2)	9m 39s
Artifact Android emulator tests (API ${{ matrix.api-level }})	0s
Clean up GitHub Action caches	12s
Publish snapshot	0s
	2h 32m 21s

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