chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/ci.yml

@@ -102,12 +102,12 @@ jobs:
     runs-on: macos-15
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           path: test_output
       - run: xcrun xcresulttool merge test_output/**/*.xcresult --output-path test_output/final/final.xcresult
       - name: Upload merged test results
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: MergedTestResults
           path: test_output/final