CI(deps): Update actions/download-artifact action to v8 (#1673)

Author: renovate[bot]

.github/workflows/post-pr-reviews.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       - name: Create a .git directory needed by reviewdog
         run: git init
-      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         id: diff
         continue-on-error: true
         with: