dev: Bumped gh actions to support node 24 (#7392)

Co-authored-by: Michael Genson <71845777+michael-genson@users.noreply.github.com>

.github/workflows/test-backend.yml

@@ -46,12 +46,12 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ inputs.ref || github.sha }}
 
       - name: Set up python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.12"
 
@@ -60,7 +60,7 @@ jobs:
 
       - name: Load cached venv
         id: cached-python-dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: .venv
           key: venv-${{ runner.os }}-${{ hashFiles('**/uv.lock') }}