Update plugin com.gradle.enterprise to v3.15 #1378

Job	Run time
build	5m 14s
Configuration Cache Java-17 OS-ubuntu-latest	5m 18s
Configuration Cache Java-17 OS-windows-latest	10m 35s
Configuration Cache Java-17 OS-macos-latest	5m 20s
provide-agp-version-matrix	2s
icons-test (28)	24m 54s
Configuration Cache Java-20 OS-ubuntu-latest	7m 15s
Configuration Cache Java-20 OS-windows-latest	10m 46s
Configuration Cache Java-20 OS-macos-latest	4m 54s
Run Gradle-release-candidate, AGP-8.1.1, Java-17	4m 32s
Run Gradle-release-candidate, AGP-8.2.0-beta03, Java-17	10m 10s
Run Gradle-release-candidate, AGP-8.3.0-alpha03, Java-17	10m 32s
Run Gradle-release-candidate, AGP-8.1.1, Java-20	3m 41s
Run Gradle-release-candidate, AGP-8.2.0-beta03, Java-20	11m 10s
Run Gradle-release-candidate, AGP-8.3.0-alpha03, Java-20	9m 1s
Run Gradle-7.5, AGP-7.4.1, Java-11	4m 33s
Run Gradle-current, AGP-7.4.1, Java-17	12m 20s
Run Gradle-current, AGP-7.4.1, Java-19	10m 15s
	2h 30m 32s

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