ci(test-all): add cache nuget packages and standalone restore

Author: vojtechmares

.github/workflows/test-all.yml

@@ -15,8 +15,19 @@ jobs:
         with:
           dotnet-version: '9.0.x'
 
+      - name: Cache NuGet packages
+        uses: actions/cache@v4
+        with:
+          path: ${{ github.workspace }}/.nuget/packages
+          key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.csproj') }}-${{ hashFiles('**/global.json') }}
+          restore-keys: |
+            ${{ runner.os }}-nuget-
+
+      - name: dotnet restore
+        run: dotnet restore 
+
       - name: dotnet build
-        run: dotnet build
+        run: dotnet build --no-restore
 
       - name: dotnet test
-        run: dotnet test
+        run: dotnet test --no-build --verbosity normal