Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: gkorland

.github/workflows/playwright.yml

@@ -53,7 +53,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cache/ms-playwright
-        key: playwright-${{ runner.os }}-${{ hashFiles('package-lock.json') }}
+        key: playwright-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('package-lock.json') }}
 
     - name: Install Playwright browsers
       if: steps.playwright-cache.outputs.cache-hit != 'true'