workflow/lint: add setup-python/cache, update checkout

.forgejo/workflows/lint.yml

@@ -20,23 +20,22 @@ jobs:
           echo -e 'max_parallel_downloads=20\ndeltarpm=False\nfastestmirror=False' | tee -a /etc/dnf/dnf.conf
           dnf -yq install nodejs git pipx
 
-      - uses: actions/checkout@v3  # definitely needs nodejs, probably git
+      - uses: actions/checkout@v4  # v5 needs nodejs 24+, f42 ships 22
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.14'
+          cache: 'pip'
 
       - name: ansible/collections
-        shell: bash
         run: |
-          echo /root/.local/bin >> $FORGEJO_PATH
-          pipx install ansible-core ansible-lint
+          pip install ansible-core ansible-lint
           ansible-galaxy collection install -r meta/requirements.yml
         env:
           PY_COLORS: '1'
           ANSIBLE_FORCE_COLOR: '1'
 
       - name: ansible-lint
-        shell: bash
         run: |
-          cat $FORGEJO_PATH
-          echo /root/.local/bin >> $FORGEJO_PATH
           ansible-lint
         env:
           PY_COLORS: '1'