Bump javafx version to 17.0.20 - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
------------- Commit messages: - Bump version to 17.0.20 Changes: https://git.openjdk.org/jfx17u/pull/262/files Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=262&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8382868 Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jfx17u/pull/262.diff Fetch: git fetch https://git.openjdk.org/jfx17u.git pull/262/head:pull/262 PR: https://git.openjdk.org/jfx17u/pull/262
