Bump tsx from 4.19.4 to 4.20.3

Bumps [tsx](https://github.com/privatenumber/tsx) from 4.19.4 to 4.20.3.
- [Release notes](https://github.com/privatenumber/tsx/releases)
- [Changelog](https://github.com/privatenumber/tsx/blob/master/release.config.cjs)
- [Commits](privatenumber/tsx@v4.19.4...v4.20.3)

---
updated-dependencies:
- dependency-name: tsx
  dependency-version: 4.20.3
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -51,7 +51,7 @@
     "nodemon": "^3.1.10",
     "prettier": "^3.6.2",
     "safe-marked": "16.0.0",
-    "tsx": "^4.19.3",
+    "tsx": "^4.20.3",
     "typescript": "^5.8.3",
     "unified": "^11.0.5",
     "vfile": "^6.0.3"