fixup! Add CI workflow testing with custom kernel

Author: d-e-s-o

.github/workflows/test-linux.yml

@@ -17,6 +17,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
       - uses: Swatinem/rust-cache@v2
+      - uses: actions/setup-python@v5
+        id: py312
+        with:
+          python-version: '3.12'
       - name: Install required tools
         run: sudo apt-get install -y llvm-14
       # We don't want a custom test runner because we run in a VM.