feat(workflows): Deprecate old runners and add new ones (#2081)

Reviewed-by: Alexander Jung <alex@unikraft.io>
Approved-by: Alexander Jung <alex@unikraft.io>

Author: nderjung

.github/workflows/tests-stable.yaml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-24.04, ubuntu-22.04, macos-12, macos-13, macos-14, mac-m2-14]
+        os: [ubuntu-24.04, ubuntu-22.04, ubuntu-24.04-arm, ubuntu-22.04-arm, macos-13, macos-14, macos-15]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4