Bump ts-graphviz/setup-graphviz from 1 to 2

Bumps [ts-graphviz/setup-graphviz](/~https://github.com/ts-graphviz/setup-graphviz) from 1 to 2.
- [Release notes](/~https://github.com/ts-graphviz/setup-graphviz/releases)
- [Commits](ts-graphviz/setup-graphviz@v1...v2)

---
updated-dependencies:
- dependency-name: ts-graphviz/setup-graphviz
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/autograding.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           maven-version: 3.9.5
       - name: Setup Graphviz
-        uses: ts-graphviz/setup-graphviz@v1
+        uses: ts-graphviz/setup-graphviz@v2
       - name: Build with Maven
         run: mvn -V --color always -ntp clean verify -Ppit | tee maven.log
       - name: Extract pull request number