Bump dotenv-rails from 3.1.5 to 3.1.6

Bumps [dotenv-rails](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-rails
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -130,9 +130,9 @@ GEM
     dalli (3.2.8)
     date (3.4.1)
     deb_control (0.0.1)
-    dotenv (3.1.5)
-    dotenv-rails (3.1.5)
-      dotenv (= 3.1.5)
+    dotenv (3.1.6)
+    dotenv-rails (3.1.6)
+      dotenv (= 3.1.6)
       railties (>= 6.1)
     drb (2.2.1)
     erubi (1.13.0)
@@ -341,7 +341,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rdoc (6.8.1)
+    rdoc (6.9.0)
       psych (>= 4.0.0)
     redis (4.8.1)
     reline (0.5.12)
@@ -361,7 +361,7 @@ GEM
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
     sdl4r (0.9.11)
-    securerandom (0.4.0)
+    securerandom (0.4.1)
     semantic_range (2.3.1)
     shoulda (4.0.0)
       shoulda-context (~> 2.0)