chore(gha): bump peter-evans/create-pull-request from 7 to 8 (#434)

Author: dependabot[bot]

.github/workflows/post-release-update_bpmn_visualization_version_in_Examples_repo.yml

@@ -47,7 +47,7 @@ jobs:
         run: ls -R
         working-directory: path/to/artifact
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ secrets.GH_RELEASE_TOKEN }}
           commit-message: "chore(deps): update bpmn-visualization version to ${{ env.VERSION }}"

.github/workflows/post-release-update_bpmn_visualization_version_in_R_repo.yml

@@ -37,7 +37,7 @@ jobs:
         run: ls -R
         working-directory: inst/htmlwidgets
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ secrets.GH_RELEASE_TOKEN }}
           commit-message: "chore(deps): bump bpmn-visualization from ${{ env.OLD_VERSION }} to ${{ env.VERSION }}"