Update openjdk

Changes:

- docker-library/openjdk@045b903: Update 20 to 20-ea+11
- docker-library/openjdk@6e4c15a: Update 19
- docker-library/openjdk@4b928d2: Update 18 to 18.0.2.1
- docker-library/openjdk@241c62f: Merge pull request docker-library/openjdk#510 from infosiftr/orphanjdk
- docker-library/openjdk@f9cf605: Remove now-defunct 8u and 11u builds
- docker-library/openjdk@837d7bc: Update 20 to 20-ea+10
- docker-library/openjdk@afc6de3: Update 19 to 19