Fix workflow checkout to allow manifest push

.github/workflows/build-plugin.yml

@@ -13,6 +13,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          ref: master
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
@@ -60,6 +64,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          ref: master
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Download artifacts
         uses: actions/download-artifact@v4