Update actions/checkout action to v7

Author: litetex-renovate

.github/workflows/update.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
 
     - name: Init - Vars
       id: initvars