Bump flipper from 0.25.2 to 0.25.4

Bumps [flipper](https://github.com/jnunemaker/flipper) from 0.25.2 to 0.25.4.
- [Release notes](https://github.com/jnunemaker/flipper/releases)
- [Changelog](https://github.com/jnunemaker/flipper/blob/master/Changelog.md)
- [Commits](flippercloud/flipper@v0.25.2...v0.25.4)

---
updated-dependencies:
- dependency-name: flipper
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile

@@ -52,7 +52,7 @@ gem 'datacite-client', github: 'ualbertalib/datacite-client', tag: 'v0.1.0', req
 gem 'differ' # Used to diff two strings
 gem 'draper'
 gem 'edtf', '~> 3.1' # parsing Extended Date/Time Format
-gem 'flipper', '~> 0.25.2' # Feature flags for Ruby
+gem 'flipper', '~> 0.25.4' # Feature flags for Ruby
 gem 'flipper-active_record', '~> 0.25.0' # Store feature flags in ActiveRecord
 gem 'flipper-ui', '~> 0.25.0' # UI for feature flags
 gem 'jbuilder' # generate JSON objects

Gemfile.lock

@@ -233,7 +233,7 @@ GEM
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
     ffi (1.15.5)
-    flipper (0.25.2)
+    flipper (0.25.4)
     flipper-active_record (0.25.0)
       activerecord (>= 4.2, < 8)
       flipper (~> 0.25.0)
@@ -630,7 +630,7 @@ DEPENDENCIES
   edtf (~> 3.1)
   erb_lint (>= 0.0.35)
   faker
-  flipper (~> 0.25.2)
+  flipper (~> 0.25.4)
   flipper-active_record (~> 0.25.0)
   flipper-ui (~> 0.25.0)
   google-api-client