docs: bump pinned transitive deps (#966)

Pin `qs` and `webpack-dev-server` via `pnpm.overrides` and refresh the
lockfile.

Author: mlw

docs/package.json

@@ -84,8 +84,10 @@
       "fast-uri@<3.1.2": "3.1.2",
       "lodash-es@<=4.17.23": "4.18.1",
       "mermaid@<11.15.0": "11.15.0",
+      "qs@>=6.11.1 <=6.15.1": "6.15.2",
       "serialize-javascript@<7.0.5": "7.0.5",
-      "uuid@<14.0.0": "14.0.0"
+      "uuid@<14.0.0": "14.0.0",
+      "webpack-dev-server@<=5.2.3": "5.2.4"
     }
   }
 }