Merge pull request #2018 from nextcloud/renovate/actions-checkout-6.x

Update actions/checkout action to v6

Author: AndyScherzinger

.github/workflows/garm.yml

@@ -30,7 +30,7 @@ jobs:
                 server: [ stable22, stable33, master ]
                 api-level: [ 29 ] # [ 21, 36 ]
         steps:
-            -   uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+            -   uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
             -   name: configure server
                 run: |