Bump doorkeeper from 5.5.1 to 5.5.2

Bumps [doorkeeper](https://github.com/doorkeeper-gem/doorkeeper) from 5.5.1 to 5.5.2.
- [Release notes](https://github.com/doorkeeper-gem/doorkeeper/releases)
- [Changelog](https://github.com/doorkeeper-gem/doorkeeper/blob/main/CHANGELOG.md)
- [Commits](doorkeeper-gem/doorkeeper@v5.5.1...v5.5.2)

---
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 "2.6.5"
 
 gem "rails", "~> 6.1"
-gem "doorkeeper", "~> 5.5.1"
+gem "doorkeeper", "~> 5.5.2"
 gem "devise", "~> 4.8"
 
 gem "faker"

Gemfile.lock

@@ -64,7 +64,7 @@ GEM
     bcrypt (3.1.16)
     builder (3.2.4)
     coderay (1.1.3)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.1.9)
     crass (1.0.6)
     database_cleaner (2.0.1)
       database_cleaner-active_record (~> 2.0.0)
@@ -79,7 +79,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.4.4)
-    doorkeeper (5.5.1)
+    doorkeeper (5.5.2)
       railties (>= 5)
     erubi (1.10.0)
     execjs (2.7.0)
@@ -102,18 +102,18 @@ GEM
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    loofah (2.9.1)
+    loofah (2.10.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (1.0.1)
     method_source (0.9.2)
     mini_mime (1.0.3)
-    mini_portile2 (2.5.1)
+    mini_portile2 (2.5.3)
     minitest (5.14.4)
     nio4r (2.5.7)
-    nokogiri (1.11.5)
+    nokogiri (1.11.7)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     orm_adapter (0.5.0)
@@ -244,7 +244,7 @@ DEPENDENCIES
   coderay
   database_cleaner
   devise (~> 4.8)
-  doorkeeper (~> 5.5.1)
+  doorkeeper (~> 5.5.2)
   factory_bot_rails
   faker
   jquery-rails