Bump dawidd6/action-download-artifact from 3 to 6 in /.github/workflows

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 3 to 6.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v3...v6)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/comment-on-pr.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
     - name: Get the PR Number artifact
-      uses: dawidd6/action-download-artifact@v3
+      uses: dawidd6/action-download-artifact@v6
       with:
         workflow: ${{ github.event.workflow_run.workflow_id }}
         workflow_conclusion: ""
@@ -30,7 +30,7 @@ jobs:
       run: echo $PR_NUMBER
 
     - name: Get the code coverage results file
-      uses: dawidd6/action-download-artifact@v3
+      uses: dawidd6/action-download-artifact@v6
       with:
         workflow: ${{ github.event.workflow_run.workflow_id }}
         workflow_conclusion: ""