fix: Invalid repository, Expected format {owner}/{repo}.

.gitea/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # - name: Check is image already exists
       #   id: extract-version
@@ -40,9 +40,9 @@ jobs:
           platforms: linux/amd64,linux/arm64
 
       - name: Get upstream repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
-          repository: https://github.com/ONLYOFFICE/DocumentServer/
+          repository: ONLYOFFICE/DocumentServer
           ref: master
           path: upstream