Fix build script for net 9.0

.gitea/workflows/build-debian-package.yml

@@ -21,11 +21,11 @@ jobs:
         with:
           dotnet-version: "9.0.x"
       - name: "Oqtane Framework restore"
-        run: dotnet restore ./oqtane.framework/Oqtane.slnx --verbosity detailed
+        run: dotnet restore ./oqtane.framework/Oqtane.sln --verbosity detailed
       - name: "Oqtane Framework bauen"
-        run: dotnet build -c Release ./oqtane.framework/Oqtane.slnx
+        run: dotnet build -c Release ./oqtane.framework/Oqtane.sln
       - name: "Oqtane Framework publish"
-        run: dotnet publish -c Release ./oqtane.framework/Oqtane.slnx -o ./alumnihub_10.0_amd64/opt/alumnihub
+        run: dotnet publish -c Release ./oqtane.framework/Oqtane.sln -o ./alumnihub_10.0_amd64/opt/alumnihub
       - name: "Build .deb"
         run: ./run-build.sh "${{ gitea.ref_name }}" "./alumnihub_10.0_amd64"
       - name: "Upload .deb"