[jfx18] RFR: 8285181: Change JavaFX release version to 18.0.2 in jfx18 branch

[Johan Vos]

Increase security version to 2 for JavaFX 18.0.2

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Commit messages:
 - Increase security version to 2 for JavaFX 18.0.2

Changes: https://git.openjdk.java.net/jfx/pull/776/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=776&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8285181
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jfx/pull/776.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/776/head:pull/776

PR: https://git.openjdk.java.net/jfx/pull/776