Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/blank.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: build
       run: |
@@ -73,7 +73,7 @@ jobs:
               *.AppImage*
               *.AppBundle*
 
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - name: Update LATEST_VERSION
           run: |
             echo "${{ env.VERSION }}" > ./LATEST_VERSION