chore:(deps): bump @testing-library/user-event in /explorer (#11820)

Bumps [@testing-library/user-event](https://github.com/testing-library/user-event) from 12.1.1 to 12.1.3.
- [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/v12.1.1...v12.1.3)

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

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

explorer/package-lock.json

@@ -3101,9 +3101,9 @@
       }
     },
     "@testing-library/user-event": {
-      "version": "12.1.1",
-      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-12.1.1.tgz",
-      "integrity": "sha512-gJ2lD3tANqVLS6GWh2gEqvEYDPlxzR+6uLAvzdb5CH6KIM6kXfCwsvK0oLhmDRFAuj8WfnBH9CaM5YDplkWFrQ==",
+      "version": "12.1.3",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-12.1.3.tgz",
+      "integrity": "sha512-U6tpKWbBMvqt8tIF77crr9VyP1W+yxK+c48xH5rvYwmT4MER5jvWAFqNzkn542Bt3qeDCn0aqwb0Pv+3mDbLtw==",
       "requires": {
         "@babel/runtime": "^7.10.2"
       },

explorer/package.json

@@ -8,7 +8,7 @@
     "@solana/web3.js": "^0.71.6",
     "@testing-library/jest-dom": "^5.11.4",
     "@testing-library/react": "^10.4.9",
-    "@testing-library/user-event": "^12.1.1",
+    "@testing-library/user-event": "^12.1.3",
     "@types/bn.js": "^4.11.6",
     "@types/bs58": "^4.0.1",
     "@types/chai": "^4.2.12",