fix(deps): move TypeScript to devDependencies

Author: jrolfs

package.json

@@ -83,7 +83,6 @@
     "prettier": "^2.2.1",
     "read-pkg-up": "^7.0.1",
     "rimraf": "^3.0.2",
-    "typescript": "^4.2.2",
     "which": "^2.0.2",
     "yargs-parser": "^20.2.4"
   },
@@ -122,6 +121,7 @@
     "eslint-config-kentcdodds": "^17.5.0",
     "jest-in-case": "^1.0.2",
     "npm-run-all": "^4.1.5",
-    "slash": "^3.0.0"
+    "slash": "^3.0.0",
+    "typescript": "^4.2.2"
   }
 }