chore: bump prettier from 2.0.5 to 2.1.1 in /web3.js (#12107)

Bumps [prettier](https://github.com/prettier/prettier) from 2.0.5 to 2.1.1.
- [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/2.0.5...2.1.1)

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

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

web3.js/package-lock.json

@@ -19831,9 +19831,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.0.5.tgz",
-      "integrity": "sha512-7PtVymN48hGcO4fGjybyBSIWDsLU4H4XlvOHfq91pz9kkGlonzwTfYkaIEwiRg/dAJF9YlbsduBAgtYLi+8cFg==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.1.1.tgz",
+      "integrity": "sha512-9bY+5ZWCfqj3ghYBLxApy2zf6m+NJo5GzmLTpr9FsApsfjriNnS2dahWReHMi7qNPhhHl9SYHJs2cHZLgexNIw==",
       "dev": true
     },
     "prettier-linter-helpers": {