[jfx20u] RFR: 8306450: Create release notes for JavaFX 20.0.1

[Abhinay Agarwal]

Add release notes for JavaFX 20.0.1

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Commit messages:
 - 8306450: Create release notes for JavaFX 20.0.1

Changes: https://git.openjdk.org/jfx20u/pull/14/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx20u&pr=14&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306450
  Stats: 20 lines in 1 file changed: 20 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx20u/pull/14.diff
  Fetch: git fetch https://git.openjdk.org/jfx20u.git pull/14/head:pull/14

PR: https://git.openjdk.org/jfx20u/pull/14