build(deps-dev): bump org.codehaus.mojo:versions-maven-plugin from 2.18.0 to 2.21.0 #1071

Job	Run time
Run checkstyle	39s
Run integration test with Java 11 and Maven 4.0.0-beta-5	47s
Run integration test with Java 11 and Maven 3.8.8	56s
Run integration test with Java 11 and Maven 4.0.0-rc-2	55s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	48s
Run integration test with Java 11 and Maven 3.9.9	1m 12s
Run basic test with Java 11	47s
Run basic test with Java 16	43s
Run basic test with Java 15	45s
Run basic test with Java 14	51s
Run basic test with Java 22	41s
Run basic test with Java 13	43s
Run basic test with Java 23	49s
Run basic test with Java 20	46s
Run basic test with Java 21	42s
Run basic test with Java 12	41s
Run basic test with Java 17	50s
Run basic test with Java 18	41s
Run basic test with Java 19	51s
Run integration test with Java 11 and Maven 3.6.3	57s
Deploy snapshot	0s
Run coveralls	0s
	16m 4s

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