build(deps): bump actions/checkout from 4 to 6 #1037

Job	Run time
Run checkstyle	44s
Run integration test with Java 11 and Maven 3.6.3	1m 28s
Run integration test with Java 11 and Maven 3.9.9	1m 3s
Run integration test with Java 11 and Maven 4.0.0-rc-2	1m 2s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	58s
Run integration test with Java 11 and Maven 3.8.8	1m 24s
Run basic test with Java 11	41s
Run integration test with Java 11 and Maven 4.0.0-beta-5	1m 2s
Run basic test with Java 12	42s
Run basic test with Java 17	43s
Run basic test with Java 13	42s
Run basic test with Java 15	45s
Run basic test with Java 20	48s
Run basic test with Java 19	44s
Run basic test with Java 23	45s
Run basic test with Java 21	50s
Run basic test with Java 18	49s
Run basic test with Java 22	52s
Run basic test with Java 14	44s
Run basic test with Java 16	48s
Run coveralls	-1s
Deploy snapshot	-1s
	17m 32s

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