chore(gha): bump actions/download-artifact from 7 to 8 (#447)

Author: dependabot[bot]

.github/workflows/post-release-create-gh-release_Examples_repo.yml

@@ -52,7 +52,7 @@ jobs:
           echo "TAG=${GITHUB_REF_NAME}" >> $GITHUB_ENV
 
       - name: Download examples artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           name: maxgraph_${{ env.VERSION }}_examples.zip
           path: artifacts/examples