Bump dotenv from 3.1.5 to 3.1.6

Bumps [dotenv](https://github.com/bkeepers/dotenv) from 3.1.5 to 3.1.6.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/main/Changelog.md)
- [Commits](bkeepers/dotenv@v3.1.5...v3.1.6)

---
updated-dependencies:
- dependency-name: dotenv
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -177,7 +177,7 @@ GEM
       warden (~> 1.2.3)
     diff-lcs (1.5.1)
     docile (1.4.0)
-    dotenv (3.1.5)
+    dotenv (3.1.6)
     drb (2.2.1)
     email_spec (2.3.0)
       htmlentities (~> 4.3.3)