build(deps): bump actions/checkout from 4 to 6 #1036

Job	Run time
Run checkstyle	37s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	1m 7s
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-beta-5	1m 2s
Run integration test with Java 11 and Maven 3.8.8	1m 17s
Run integration test with Java 11 and Maven 4.0.0-rc-2	57s
Run basic test with Java 11	43s
Run basic test with Java 13	42s
Run basic test with Java 14	42s
Run basic test with Java 18	53s
Run basic test with Java 20	47s
Run basic test with Java 16	41s
Run basic test with Java 12	49s
Run basic test with Java 19	47s
Run basic test with Java 15	44s
Run basic test with Java 17	44s
Run basic test with Java 21	43s
Run basic test with Java 23	49s
Run basic test with Java 22	46s
Run coveralls	-1s
Deploy snapshot	-1s
	17m 19s

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