Update old asset uploaded in PR workflow

Author: worksofliam

.github/workflows/webpack_ci.yaml

@@ -35,7 +35,7 @@ jobs:
         cat $GITHUB_ENV
 
     - name: Upload dist artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: test_vsix
         path: ${{env.vsix_name}}
@@ -70,4 +70,4 @@ jobs:
           👋 A new build is available for this PR based on ${{ github.event.pull_request.head.sha }}.
 
           * [Download here.](https://github.com/codefori/vscode-db2i/actions/runs/${{ github.run_id }})
-          * [Read more about how to test](https://github.com/codefori/vscode-db2i/blob/master/.github/pr_testing_template.md)
+          * [Read more about how to test](https://github.com/codefori/vscode-db2i/blob/master/.github/pr_testing_template.md)