RFR: 8332328: [GHA] GitHub Actions build fails on Linux: unable to find gcc-13

[Kevin Rushforth]

It looks like the list of packages available in the Ubuntu 22.04 GitHub Actions test runner no longer includes `gcc-13` as of yesterday. I didn't find any documentation to indicate that this was intentional, but now that Ubuntu 24.04 is available we can fix the problem by updating to that version. We will need to do this at some point anyway, so we might as well do it now.

With this fix, the GHA test build now passes on all platforms. See the test results to verify this.

Given that GHA builds are currently broken on Linux, and that this fix doesn't affect the product at all (just our GHA tests), I will integrate this as soon as it is approved by 1 Reviewer, as an exception to the usual requirement to wait for 24 hours.

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Commit messages:
 - 8332328: [GHA] GitHub Actions build fails on Linux: unable to find gcc-13

Changes: https://git.openjdk.org/jfx/pull/1457/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1457&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332328
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1457.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1457/head:pull/1457

PR: https://git.openjdk.org/jfx/pull/1457