Adding Linux aarch64 in GHA build. The required change is very minor. Similar to difference between macOS x64 and aarch64, the linux x64 and aarch64 differ in, - name - runs-on platform name - BOOT_JDK_FILENAME - BOOT_JDK_URL
Verification: - The GHA build completed successfully on Linux aarch64 platform - The build log is as expected, with a few differences in the timestamp, hashes, gradle thread names, etc. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - add linux aarch64 Changes: https://git.openjdk.org/jfx/pull/2214/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2214&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8339270 Stats: 84 lines in 1 file changed: 84 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/2214.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2214/head:pull/2214 PR: https://git.openjdk.org/jfx/pull/2214
