Bump dotenv-rails from 2.2.2 to 2.5.0 (#8934)

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.2.2 to 2.5.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/master/Changelog.md)
- [Commits](https://github.com/bkeepers/dotenv/compare/v2.2.2...v2.5.0)

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

Gemfile

@@ -13,7 +13,7 @@ gem 'hamlit-rails', '~> 0.2'
 gem 'pg', '~> 1.1'
 gem 'makara', '~> 0.4'
 gem 'pghero', '~> 2.2'
-gem 'dotenv-rails', '~> 2.2', '< 2.3'
+gem 'dotenv-rails', '~> 2.5'
 
 gem 'aws-sdk-s3', '~> 1.21', require: false
 gem 'fog-core', '~> 2.1'

Gemfile.lock

@@ -184,9 +184,9 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     doorkeeper (5.0.0)
       railties (>= 4.2)
-    dotenv (2.2.2)
-    dotenv-rails (2.2.2)
-      dotenv (= 2.2.2)
+    dotenv (2.5.0)
+    dotenv-rails (2.5.0)
+      dotenv (= 2.5.0)
       railties (>= 3.2, < 6.0)
     elasticsearch (6.0.2)
       elasticsearch-api (= 6.0.2)
@@ -673,7 +673,7 @@ DEPENDENCIES
   devise-two-factor (~> 3.0)
   devise_pam_authenticatable2 (~> 9.2)
   doorkeeper (~> 5.0)
-  dotenv-rails (~> 2.2, < 2.3)
+  dotenv-rails (~> 2.5)
   fabrication (~> 2.20)
   faker (~> 1.9)
   fast_blank (~> 1.0)