📦 Update dependency rollup-plugin-serve to v2.0.3 (#39666)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

third_party/amp-toolbox-cache-url/package.json

@@ -47,7 +47,7 @@
     "rollup-plugin-json": "4.0.0",
     "rollup-plugin-node-builtins": "2.1.2",
     "@rollup/plugin-node-resolve": "15.2.3",
-    "rollup-plugin-serve": "2.0.2",
+    "rollup-plugin-serve": "2.0.3",
     "semver": "7.5.4"
   }
 }