chore(deps): bump dawidd6/action-download-artifact from 19 to 20 (OpenHands#2764)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pr-review-evaluation.yml

@@ -28,7 +28,7 @@ jobs:
         steps:
             - name: Download review trace artifact
               id: download-trace
-              uses: dawidd6/action-download-artifact@v19
+              uses: dawidd6/action-download-artifact@v20
               continue-on-error: true
               with:
                   workflow: pr-review-by-openhands.yml

.github/workflows/qa-changes-evaluation.yml

@@ -28,7 +28,7 @@ jobs:
         steps:
             - name: Download QA trace artifact
               id: download-trace
-              uses: dawidd6/action-download-artifact@v19
+              uses: dawidd6/action-download-artifact@v20
               continue-on-error: true
               with:
                   workflow: qa-changes-by-openhands.yml