Bump actions/upload-artifact from 4 to 7 (#31372)

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

.github/workflows/claude-code-review.yml

@@ -25,7 +25,7 @@ jobs:
         run: echo "$PR_NUMBER" > pr-number.txt
 
       - name: Upload PR number
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: pr-number
           path: pr-number.txt

.github/workflows/default.yml

@@ -264,7 +264,7 @@ jobs:
           TZ: Europe/Berlin
 
       - name: Upload Playwright Report
-        uses: actions/upload-artifact@v7.0.1
+        uses: actions/upload-artifact@v7
         if: ${{ !cancelled() }}
         with:
           name: playwright-report
@@ -272,7 +272,7 @@ jobs:
           retention-days: 14
 
       - name: Upload Playwright Raw Test Results
-        uses: actions/upload-artifact@v7.0.1
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: playwright-test-results