Bump npm-check-updates from 16.14.18 to 16.14.20 in /screencast

Bumps [npm-check-updates](https://github.com/raineorshine/npm-check-updates) from 16.14.18 to 16.14.20.
- [Release notes](https://github.com/raineorshine/npm-check-updates/releases)
- [Changelog](https://github.com/raineorshine/npm-check-updates/blob/main/CHANGELOG.md)
- [Commits](raineorshine/npm-check-updates@v16.14.18...v16.14.20)

---
updated-dependencies:
- dependency-name: npm-check-updates
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

screencast/package.json

@@ -19,6 +19,6 @@
     "svgo": "^3.2.0"
   },
   "devDependencies": {
-    "npm-check-updates": "^16.14.18"
+    "npm-check-updates": "^16.14.20"
   }
 }