Create a dummy description if no version problems are found

Currently the PR step is skipped if no report file is written, but then
the delete branch option do not work.

This now creates a dummy description file so the PR job can always run.

.github/workflows/checkDependencies.yml

@@ -91,9 +91,14 @@ jobs:
         working-directory: ${{ matrix.bundles }} 
         run: >-
           mvn -B -ntp ${{ inputs.maven-goals }} -DskipTests -Pdependency-check -Dtycho.dependency.check.apply=true
+      - name: Create PR description file if missing
+        if: ${{ hashFiles(format('{0}/target/versionProblems.md', matrix.bundles)) == '' }}
+        working-directory: ${{ matrix.bundles }}
+        run: |
+          mkdir -p target
+          echo '## No version problems detected' > target/versionProblems.md
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@c5a7806660adbe173f04e3e038b0ccdcd758773c # v6.1.0
-        if: ${{ hashFiles(format('{0}/target/versionProblems.md', matrix.bundles)) != '' }} 
         with:
           commit-message: Update version ranges of dependencies for ${{ matrix.bundles }}
           branch: dependency-check/${{ matrix.bundles }}