Bump better_errors from 2.7.1 to 2.8.1 (mastodon#14825)

Bumps [better_errors](https://github.com/BetterErrors/better_errors) from 2.7.1 to 2.8.1.
- [Release notes](https://github.com/BetterErrors/better_errors/releases)
- [Commits](BetterErrors/better_errors@v2.7.1...v2.8.1)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -134,7 +134,7 @@ end
 group :development do
   gem 'active_record_query_trace', '~> 1.7'
   gem 'annotate', '~> 3.1'
-  gem 'better_errors', '~> 2.7'
+  gem 'better_errors', '~> 2.8'
   gem 'binding_of_caller', '~> 0.7'
   gem 'bullet', '~> 6.1'
   gem 'letter_opener', '~> 1.7'

Gemfile.lock

@@ -95,7 +95,7 @@ GEM
     aws-sigv4 (1.2.2)
       aws-eventstream (~> 1, >= 1.0.2)
     bcrypt (3.1.16)
-    better_errors (2.7.1)
+    better_errors (2.8.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -681,7 +681,7 @@ DEPENDENCIES
   addressable (~> 2.7)
   annotate (~> 3.1)
   aws-sdk-s3 (~> 1.80)
-  better_errors (~> 2.7)
+  better_errors (~> 2.8)
   binding_of_caller (~> 0.7)
   blurhash (~> 0.1)
   bootsnap (~> 1.4)