ci/install-tests: Update to newer podman

For here doc support.

Signed-off-by: Colin Walters <[email protected]>

Author: cgwalters

.github/workflows/ci.yml

@@ -65,6 +65,12 @@ jobs:
     # For a not-ancient podman
     runs-on: ubuntu-24.04
     steps:
+      - name: Get a newer podman for heredoc support (from debian testing)
+        run: |
+          set -eux
+          echo 'deb [trusted=yes] https://ftp.debian.org/debian/ testing main' | sudo tee /etc/apt/sources.list.d/testing.list
+          sudo apt update
+          sudo apt install -y crun/testing podman/testing skopeo/testing
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Free up disk space on runner