Bump dotenv from 3.0.2 to 3.1.0

Bumps [dotenv](https://github.com/bkeepers/dotenv) from 3.0.2 to 3.1.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/main/Changelog.md)
- [Commits](bkeepers/dotenv@v3.0.2...v3.1.0)

---
updated-dependencies:
- dependency-name: dotenv
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -36,7 +36,7 @@ GEM
     database_cleaner-core (2.0.1)
     declarative (0.0.20)
     diff-lcs (1.5.1)
-    dotenv (3.0.2)
+    dotenv (3.1.0)
     drb (2.2.0)
       ruby2_keywords
     excon (0.95.0)