build(deps): bump actions/cache from 5 to 6 #1157

Job	Run time
Run checkstyle	49s
Run integration test with Java 11 and Maven 3.9.9	1m 44s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	1m 10s
Run integration test with Java 11 and Maven 4.0.0-rc-5	1m 3s
Run integration test with Java 11 and Maven 3.9.0	2m 35s
Run integration test with Java 11 and Maven 4.0.0-beta-5	1m 10s
Run basic test with Java 14	48s
Run basic test with Java 19	45s
Run basic test with Java 16	53s
Run basic test with Java 11	45s
Run basic test with Java 12	48s
Run basic test with Java 18	52s
Run basic test with Java 17	52s
Run basic test with Java 22	46s
Run basic test with Java 20	52s
Run basic test with Java 15	47s
Run basic test with Java 23	53s
Run basic test with Java 21	47s
Run basic test with Java 26	55s
Run basic test with Java 24	48s
Run basic test with Java 13	46s
Run basic test with Java 25	53s
Deploy snapshot	-1s
Run coveralls	-1s
	21m 39s

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