RFR: 2160: Update GHA versions

[Zhao Song]

This patch is trying to update the GHA versions, only `actions/checkout` and `actions/github-script` are used in GitHub Actions for skara. As `actions/checkout` is already the latest version, I only bumped the version of `actions/github-script`.

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Commit messages:
 - SKARA-2160

Changes: https://git.openjdk.org/skara/pull/1609/files
 Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1609&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2160
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1609.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1609/head:pull/1609

PR: https://git.openjdk.org/skara/pull/1609