Merge pull request #287 from PowerGridModel/dependabot/github_actions/dieghernan/cff-validator-4

Bump dieghernan/cff-validator from 3 to 4

Author: mgovers

.github/workflows/citations.yml

@@ -35,4 +35,4 @@ jobs:
       run: |
         sudo apt-get update && sudo apt-get install -y r-base
     - name: Validate CITATION.cff
-      uses: dieghernan/cff-validator@v3
+      uses: dieghernan/cff-validator@v4