Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -18,7 +18,7 @@ jobs:
         env:
             REPO: ghcr.io/akimitsulebot/bilderna
         steps:
-            - uses: actions/checkout@v6
+            - uses: actions/checkout@v7
             - name: Build Docker image
               run: docker build -t $REPO:latest -t $REPO:${GITHUB_SHA::8} .
             - name: Login to Docker Hub

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     if: "!contains(github.event.commits.*.message, '[skip ci]')"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Check
         run: cargo check
       - name: Fmt