Bump dotenv-rails from 2.8.1 to 3.1.0

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.8.1 to 3.1.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/main/Changelog.md)
- [Commits](bkeepers/dotenv@v2.8.1...v3.1.0)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -157,10 +157,10 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.5.0)
     docile (1.4.0)
-    dotenv (2.8.1)
-    dotenv-rails (2.8.1)
-      dotenv (= 2.8.1)
-      railties (>= 3.2)
+    dotenv (3.1.0)
+    dotenv-rails (3.1.0)
+      dotenv (= 3.1.0)
+      railties (>= 6.1)
     drb (2.2.1)
     erubi (1.12.0)
     execjs (2.9.1)
@@ -306,7 +306,7 @@ GEM
       thor (~> 1.0, >= 1.2.2)
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
-    rake (13.2.0)
+    rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)