Merge pull request #351 from kirchsth/feature/fix_deprecated_action_setup-graphviz

fix deprecated task in build: update to ts-graphviz/setup-graphviz@v2

.github/workflows/run-percy-tests.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@master
       - name: Setup Graphviz
-        uses: ts-graphviz/setup-graphviz@v1
+        uses: ts-graphviz/setup-graphviz@v2
       - name: Process diagrams
         uses: Timmy/plantuml-action@v1
         with: