Bump @types/dotenv from 6.1.1 to 8.2.0

Bumps [@types/dotenv](https://github.com/motdotla/dotenv) from 6.1.1 to 8.2.0.
- [Release notes](https://github.com/motdotla/dotenv/releases)
- [Changelog](https://github.com/motdotla/dotenv/blob/master/CHANGELOG.md)
- [Commits](https://github.com/motdotla/dotenv/commits/v8.2.0)

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

package.json

@@ -68,7 +68,7 @@
   "devDependencies": {
     "@babel/plugin-proposal-class-properties": "^7.12.1",
     "@types/bluebird": "^3.5.32",
-    "@types/dotenv": "^6.1.1",
+    "@types/dotenv": "^8.2.0",
     "@types/eccrypto": "^1.1.2",
     "@types/express": "^4.17.1",
     "@types/gun": "^0.9.2",