Bump subfont from 6.12.5 to 7.2.1 (#314)

Bumps [subfont](https://github.com/Munter/subfont) from 6.12.5 to 7.2.1.
- [Release notes](https://github.com/Munter/subfont/releases)
- [Changelog](https://github.com/Munter/subfont/blob/master/CHANGELOG.md)
- [Commits](Munter/subfont@v6.12.5...v7.2.1)

---
updated-dependencies:
- dependency-name: subfont
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -36,7 +36,7 @@
     "prettier-plugin-astro": "^0.14.0",
     "reading-time": "^1.5.0",
     "sharp": "^0.33.4",
-    "subfont": "^6.12.5",
+    "subfont": "^7.2.1",
     "typescript": "^5.4.5",
     "vite-plugin-windicss": "^1.9.3",
     "windicss": "^3.5.6",