chore: pin h3 to ^1.15.6 via pnpm override

Forces transitive h3 to a patched release to address security advisories.

Author: cursoragent

package.json

@@ -138,6 +138,7 @@
       "vite-plugin-monaco-editor@1.1.0": "patches/vite-plugin-monaco-editor@1.1.0.patch"
     },
     "overrides": {
+      "h3": "^1.15.6",
       "path-to-regexp@^6": "^6.3.0",
       "minimatch@^10": "^10.2.1",
       "undici@^5||^6": "^6.24.0",