chore:(deps): bump typescript from 4.1.5 to 4.2.2 in /explorer (#15512)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.1.5 to 4.2.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/commits)

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

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

explorer/package-lock.json

@@ -18429,9 +18429,9 @@
       }
     },
     "typescript": {
-      "version": "4.1.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
-      "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA=="
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.2.tgz",
+      "integrity": "sha512-tbb+NVrLfnsJy3M59lsDgrzWIflR4d4TIUjz+heUnHZwdF7YsrMTKoRERiIvI2lvBG95dfpLxB21WZhys1bgaQ=="
     },
     "unicode-canonical-property-names-ecmascript": {
       "version": "1.0.4",

explorer/package.json

@@ -41,7 +41,7 @@
     "react-scripts": "^4.0.3",
     "react-select": "^4.1.0",
     "superstruct": "github:solana-labs/superstruct",
-    "typescript": "^4.1.5"
+    "typescript": "^4.2.2"
   },
   "scripts": {
     "start": "react-scripts start",