Bump doorkeeper from 5.6.7 to 5.6.8

Bumps [doorkeeper](https://github.com/doorkeeper-gem/doorkeeper) from 5.6.7 to 5.6.8.
- [Release notes](https://github.com/doorkeeper-gem/doorkeeper/releases)
- [Changelog](https://github.com/doorkeeper-gem/doorkeeper/blob/main/CHANGELOG.md)
- [Commits](doorkeeper-gem/doorkeeper@v5.6.7...v.5.6.8)

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

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

Gemfile

@@ -5,7 +5,7 @@ source "http://rubygems.org"
 ruby "3.2.0"
 
 gem "rails", "~> 7.1"
-gem "doorkeeper", "~> 5.6.7"
+gem "doorkeeper", "~> 5.6.8"
 gem "devise", "~> 4.9"
 gem "sprockets-rails", require: "sprockets/railtie"
 

Gemfile.lock

@@ -98,7 +98,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.5.0)
-    doorkeeper (5.6.7)
+    doorkeeper (5.6.8)
       railties (>= 5)
     drb (2.2.0)
       ruby2_keywords
@@ -221,7 +221,7 @@ GEM
       psych (>= 4.0.0)
     redcarpet (3.6.0)
     regexp_parser (2.8.2)
-    reline (0.4.0)
+    reline (0.4.1)
       io-console (~> 0.5)
     responders (3.1.1)
       actionpack (>= 5.2)
@@ -292,7 +292,7 @@ GEM
     sqlite3 (1.6.8)
       mini_portile2 (~> 2.8.0)
     sqlite3 (1.6.8-x86_64-linux)
-    stringio (3.0.9)
+    stringio (3.1.0)
     thor (1.3.0)
     timeout (0.4.1)
     tzinfo (2.0.6)
@@ -316,7 +316,7 @@ DEPENDENCIES
   coderay
   database_cleaner
   devise (~> 4.9)
-  doorkeeper (~> 5.6.7)
+  doorkeeper (~> 5.6.8)
   factory_bot_rails
   faker
   jquery-rails