Bump typescript from 4.5.5 to 4.6.2 in /ts-tests (#388)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.5.5 to 4.6.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.5.5...v4.6.2)

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

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

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

ts-tests/package.json

@@ -21,7 +21,7 @@
     "mocha": "^9.2.0",
     "mocha-steps": "^1.3.0",
     "ts-node": "^10.7.0",
-    "typescript": "^4.5.5"
+    "typescript": "^4.6.2"
   },
   "dependencies": {
     "@polkadot/api": "^7.11.1",

ts-tests/yarn.lock

@@ -4780,10 +4780,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^4.5.5:
-  version "4.5.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.5.tgz#d8c953832d28924a9e3d37c73d729c846c5896f3"
-  integrity sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==
+typescript@^4.6.2:
+  version "4.6.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.6.2.tgz#fe12d2727b708f4eef40f51598b3398baa9611d4"
+  integrity sha512-HM/hFigTBHZhLXshn9sN37H085+hQGeJHJ/X7LpBWLID/fbc2acUMfU+lGD98X81sKP+pFa9f0DZmCwB9GnbAg==
 
 ultron@~1.1.0:
   version "1.1.1"