[maven-release-plugin] prepare release v9.0.0 #708

Job	Run time
Run checkstyle	25s
Run integration test with Java 11 and Maven 3.6.3	49s
Run basic test with Java 11	42s
Run integration test with Java 11 and Maven 3.8.8	45s
Run basic test with Java 12	41s
Run integration test with Java 11 and Maven 3.9.7	49s
Run basic test with Java 13	46s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	47s
Run basic test with Java 14	45s
Run basic test with Java 15	48s
Run integration test with Java 11 and Maven 4.0.0-beta-3	45s
Run basic test with Java 16	43s
Run basic test with Java 17	46s
Run basic test with Java 18	42s
Run basic test with Java 19	48s
Run basic test with Java 20	49s
Run basic test with Java 21	47s
Run basic test with Java 22	42s
Run coveralls	0s
Deploy snapshot	0s
	13m 19s

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