bump(modern-web-guidance): 460e5536 → 457c381d (#5617)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -2295,7 +2295,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/GoogleChrome/modern-web-guidance.git",
-        "sha": "460e5536b8e61034d83ff4af24bb0bf1112d2cb0"
+        "sha": "457c381def89ce6213a171238f92eea63e9eaeb2"
       },
       "homepage": "https://goo.gle/modern-web-guidance"
     },