Bump dotenv from 3.1.4 to 3.1.6

Bumps [dotenv](https://github.com/bkeepers/dotenv) from 3.1.4 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@v3.1.4...v3.1.6)

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

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

Gemfile.lock

@@ -106,9 +106,9 @@ GEM
     debug (1.9.2)
       irb (~> 1.10)
       reline (>= 0.3.8)
-    dotenv (3.1.4)
-    dotenv-rails (3.1.4)
-      dotenv (= 3.1.4)
+    dotenv (3.1.6)
+    dotenv-rails (3.1.6)
+      dotenv (= 3.1.6)
       railties (>= 6.1)
     drb (2.2.1)
     erubi (1.13.0)