Bump dotenv-rails from 3.1.4 to 3.1.6 (#1540)

Bumps [dotenv-rails](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](https://github.com/bkeepers/dotenv/compare/v3.1.4...v3.1.6)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Zach Gollwitzer <zach@maybe.co>

Gemfile.lock

@@ -138,9 +138,9 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     docile (1.4.0)
-    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)
     erb_lint (0.7.0)
@@ -351,11 +351,11 @@ GEM
       ffi (~> 1.0)
     rbs (3.6.1)
       logger
-    rdoc (6.9.0)
+    rdoc (6.9.1)
       psych (>= 4.0.0)
     redcarpet (3.6.0)
     regexp_parser (2.9.2)
-    reline (0.5.12)
+    reline (0.6.0)
       io-console (~> 0.5)
     rexml (3.3.9)
     rubocop (1.67.0)