Bump @fontsource/montserrat from 4.5.12 to 4.5.13 in /webapp

Bumps [@fontsource/montserrat](https://github.com/fontsource/fontsource/tree/HEAD/fonts/google/montserrat) from 4.5.12 to 4.5.13.
- [Release notes](https://github.com/fontsource/fontsource/releases)
- [Changelog](https://github.com/fontsource/fontsource/blob/main/CHANGELOG.md)
- [Commits](https://github.com/fontsource/fontsource/commits/HEAD/fonts/google/montserrat)

---
updated-dependencies:
- dependency-name: "@fontsource/montserrat"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

webapp/package.json

@@ -11,7 +11,7 @@
     "@cosmjs/stargate": "^0.29.3",
     "@ethereumjs/tx": "^4.0.0",
     "@fontsource/merriweather": "^4.5.14",
-    "@fontsource/montserrat": "^4.5.12",
+    "@fontsource/montserrat": "^4.5.13",
     "@fontsource/roboto": "^4.5.8",
     "@keplr-wallet/types": "^0.11.16",
     "@metamask/eth-sig-util": "^5.0.0",