Update actions/checkout action to v7

.forgejo/workflows/deploy-docs.yaml

@@ -23,7 +23,7 @@ jobs:
           apt -y install nodejs git rsync openssh-client
           pip install --upgrade pip
 
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v7.0.0
 
       - name: Install Python packages
         run: |

.forgejo/workflows/lint.yaml

@@ -10,7 +10,7 @@ jobs:
     name: Ansible Lint
     runs-on: docker
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v7.0.0
       - name: Install pip
         run: |
           apt update