chore:(deps): bump @testing-library/user-event in /explorer (#14769)

Bumps [@testing-library/user-event](https://github.com/testing-library/user-event) from 12.6.0 to 12.6.2.
- [Release notes](https://github.com/testing-library/user-event/releases)
- [Changelog](https://github.com/testing-library/user-event/blob/master/CHANGELOG.md)
- [Commits](https://github.com/testing-library/user-event/compare/v12.6.0...v12.6.2)

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

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

explorer/package-lock.json

@@ -3036,9 +3036,9 @@
       }
     },
     "@testing-library/user-event": {
-      "version": "12.6.0",
-      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-12.6.0.tgz",
-      "integrity": "sha512-FNEH/HLmOk5GO70I52tKjs7WvGYckeE/SrnLX/ip7z2IGbffyd5zOUM1tZ10vsTphqm+VbDFI0oaXu0wcfQsAQ==",
+      "version": "12.6.2",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-12.6.2.tgz",
+      "integrity": "sha512-4OsiTSo2vbQm+eOnm1un8b9i2Re4mn+D7d7ET6HXtzYKY7vPe3O01iYKRmSW9vS5mNrQcCLwvRhVq1gWs5YGKA==",
       "requires": {
         "@babel/runtime": "^7.12.5"
       },

explorer/package.json

@@ -9,7 +9,7 @@
     "@solana/web3.js": "^0.90.1",
     "@testing-library/jest-dom": "^5.11.9",
     "@testing-library/react": "^11.2.2",
-    "@testing-library/user-event": "^12.6.0",
+    "@testing-library/user-event": "^12.6.2",
     "@types/bn.js": "^5.1.0",
     "@types/bs58": "^4.0.1",
     "@types/chai": "^4.2.14",