Bump dotenv-rails from 3.0.3 to 3.1.0

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 3.0.3 to 3.1.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/main/Changelog.md)
- [Commits](https://github.com/bkeepers/dotenv/compare/v3.0.3...v3.1.0)

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

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

Gemfile.lock

@@ -231,9 +231,9 @@ GEM
     discard (1.3.0)
       activerecord (>= 4.2, < 8)
     docile (1.1.5)
-    dotenv (3.0.3)
-    dotenv-rails (3.0.3)
-      dotenv (= 3.0.3)
+    dotenv (3.1.0)
+    dotenv-rails (3.1.0)
+      dotenv (= 3.1.0)
       railties (>= 6.1)
     drb (2.2.0)
       ruby2_keywords