Bump parent pom to 19 and reformat sources #589

Job	Run time
Build it / fail-fast-build	3m 2s
Build it / ubuntu-latest jdk-8-temurin	47s
Build it / ubuntu-latest jdk-11-temurin	48s
Build it / ubuntu-latest jdk-17-temurin	47s
Build it / ubuntu-latest jdk-18-ea-temurin	55s
Build it / windows-latest jdk-8-temurin	1m 54s
Build it / windows-latest jdk-11-temurin	1m 28s
Build it / windows-latest jdk-17-temurin	3m 28s
Build it / windows-latest jdk-18-ea-temurin	1m 28s
Build it / macOS-latest jdk-8-temurin	3m 57s
Build it / macOS-latest jdk-11-temurin	1m 45s
Build it / macOS-latest jdk-17-temurin	1m 59s
Build it / macOS-latest jdk-18-ea-temurin	2m 21s
	24m 39s

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