[workflows] change ubuntus to test against

Author: glessard

.github/workflows/pull_request.yml

@@ -9,7 +9,7 @@ jobs:
     name: Test
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
-      linux_os_versions: '["jammy", "focal"]'
+      linux_os_versions: '["noble", "jammy", "focal"]'
       enable_macos_checks: true
       # FIXME: https://github.com/swiftlang/github-workflows/pull/140
       # Xcode 16.0 and 16.1 are not actually available