build(deps-dev): bump typescript from 3.9.7 to 4.0.2

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.7 to 4.0.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.7...v4.0.2)

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

Author: dependabot[bot]

package-lock.json

@@ -34,7 +34,7 @@
     "pika-plugin-unpkg-field": "^1.0.1",
     "semantic-release": "^17.0.0",
     "ts-jest": "^26.1.3",
-    "typescript": "^3.4.3"
+    "typescript": "^4.0.2"
   },
   "jest": {
     "preset": "ts-jest",