Move GraalVM job to JDK 11. #8519

Job	Run time
Build Clusters on JDK 11	22m 49s
NetBeans on nb-javac	0s
Build Clusters on JDK 17	11m 22s
Build Clusters on JDK 21-ea	13m 27s
Build-System Test on Linux/JDK 11	1m 46s
Check Paperwork on Linux/JDK 11	18m 26s
Build NBMs, Source zips and Javadoc on JDK 11	11m 3s
IDE Modules on Linux/JDK 11	31m 48s
Commit Validation on Linux/JDK 11	7m 46s
Commit Validation on Linux/JDK 17	7m 47s
Java Modules on Linux/JDK 11	11m 2s
Commit Validation on Linux/JDK 21-ea	7m 26s
Harness, NB and Ergonomics on Linux/JDK ${{ matrix.java }}	0s
Platform Modules batch1 on Linux/JDK ${{ matrix.java }}	0s
APISupport Modules on Linux/JDK 8	7m 24s
Enterprise on Linux/JDK 11 (some on 8)	10m 27s
Build Tools on Linux/JDK ${{ matrix.java }}	0s
GraalVM 22.3.1 Tests	15m 33s
Groovy on Linux/JDK ${{ matrix.java }}	0s
Java Debugger tests on Linux/JDK ${{ matrix.java }}	0s
JavaFX on Linux/JDK 11	2m 27s
Tests on MacOS/JDK 11	15m 14s
Java Hints ${{ matrix.config }} on Linux/JDK ${{ matrix.java }}	0s
DB Tests with MySQL on Linux/JDK 11	2m 19s
PHP on windows-2022/JDK 11	16m 13s
Platform Modules batch2 on Linux/JDK ${{ matrix.java }} (some on 11)	0s
PHP on ubuntu-20.04/JDK 11	10m 57s
Profiler on Linux/JDK 11	2m 7s
Rust on Linux/JDK ${{ matrix.java }}	0s
Versioning Modules on Linux/JDK 11	5m 22s
Webcommon Modules on Linux/JDK 11	13m 17s
LSP tests on Linux/JDK ${{ matrix.java }}	0s
VSCode Extension Tests on JDK ${{ matrix.java }}	0s
Cleanup Workflow Artifacts	0s
	4h 6m 2s

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