Use new AGP 8.4.0 apis to fetch variant sources #1581

Job	Run time
provide-agp-version-matrix	2s
build	1m 37s
icons-test (28)	7m 19s
Configuration Cache Java-17 OS-ubuntu-latest	1m 39s
Configuration Cache Java-17 OS-windows-latest	2m 50s
Configuration Cache Java-17 OS-macos-latest	2m 16s
Configuration Cache Java-21 OS-ubuntu-latest	1m 21s
Configuration Cache Java-21 OS-windows-latest	2m 30s
Configuration Cache Java-21 OS-macos-latest	2m 22s
Run Gradle-release-candidate, AGP-8.3.0, Java-17	1m 22s
Run Gradle-release-candidate, AGP-8.3.0-beta02, Java-17	1m 21s
Run Gradle-release-candidate, AGP-8.4.0-alpha13, Java-17	1m 13s
Run Gradle-release-candidate, AGP-8.3.0, Java-21	1m 24s
Run Gradle-release-candidate, AGP-8.3.0-beta02, Java-21	1m 26s
Run Gradle-release-candidate, AGP-8.4.0-alpha13, Java-21	1m 30s
Run Gradle-8.0, AGP-8.0.0, Java-17	1m 20s
Run Gradle-current, AGP-8.0.0, Java-17	1m 17s
Run Gradle-current, AGP-8.0.0, Java-19	1m 10s
	33m 59s

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