chore(deps): bump prettier from 1.19.1 to 2.0.5 in /explorer

Bumps [prettier](https://github.com/prettier/prettier) from 1.19.1 to 2.0.5.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/1.19.1...2.0.5)

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

explorer/package-lock.json

@@ -12538,9 +12538,9 @@
       "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw="
     },
     "prettier": {
-      "version": "1.19.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
-      "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew=="
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.0.5.tgz",
+      "integrity": "sha512-7PtVymN48hGcO4fGjybyBSIWDsLU4H4XlvOHfq91pz9kkGlonzwTfYkaIEwiRg/dAJF9YlbsduBAgtYLi+8cFg=="
     },
     "pretty-bytes": {
       "version": "5.3.0",

explorer/package.json

@@ -17,7 +17,7 @@
     "bootstrap": "^4.5.0",
     "bs58": "^4.0.1",
     "node-sass": "^4.14.1",
-    "prettier": "^1.19.1",
+    "prettier": "^2.0.5",
     "react": "^16.13.0",
     "react-app-rewired": "^2.1.6",
     "react-dom": "^16.13.0",