fix: upgrade eslint-plugin-prettier from 3.1.1 to 3.1.2

Snyk has created this PR to upgrade eslint-plugin-prettier from 3.1.1 to 3.1.2.

See this package in NPM:
https://www.npmjs.com/package/eslint-plugin-prettier

See this project in Snyk:
https://app.snyk.io/org/bluewallet/project/29c066bc-abce-44d9-b68e-064466e610e7?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -23,7 +23,7 @@
     "bolt11": "https://github.com/bitcoinjs/bolt11",
     "eslint": "^5.9.0",
     "eslint-config-prettier": "^3.3.0",
-    "eslint-plugin-prettier": "^3.0.0",
+    "eslint-plugin-prettier": "^3.1.2",
     "express": "^4.16.4",
     "express-rate-limit": "^3.4.0",
     "grpc": "^1.17.0-pre1",