build(deps): bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.7 to 3.2.8 #1008

Job	Run time
Run checkstyle	28s
Run integration test with Java 11 and Maven 4.0.0-beta-5	54s
Run integration test with Java 11 and Maven 3.6.3	52s
Run integration test with Java 11 and Maven 3.9.9	1m 1s
Run integration test with Java 11 and Maven 3.8.8	59s
Run integration test with Java 11 and Maven 4.0.0-rc-2	54s
Run integration test with Java 11 and Maven 4.0.0-alpha-13	48s
Run basic test with Java 14	46s
Run basic test with Java 12	44s
Run basic test with Java 15	44s
Run basic test with Java 18	40s
Run basic test with Java 11	43s
Run basic test with Java 13	43s
Run basic test with Java 19	46s
Run basic test with Java 20	40s
Run basic test with Java 22	43s
Run basic test with Java 21	41s
Run basic test with Java 16	41s
Run basic test with Java 23	44s
Run basic test with Java 17	41s
Run coveralls	0s
Deploy snapshot	0s
	15m 12s

Provide feedback