Bump doorkeeper from 5.2.1 to 5.2.2 (#12417)

Bumps [doorkeeper](https://github.com/doorkeeper-gem/doorkeeper) from 5.2.1 to 5.2.2.
- [Release notes](https://github.com/doorkeeper-gem/doorkeeper/releases)
- [Changelog](https://github.com/doorkeeper-gem/doorkeeper/blob/master/CHANGELOG.md)
- [Commits](https://github.com/doorkeeper-gem/doorkeeper/compare/v5.2.1...v5.2.2)

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

Gemfile.lock

@@ -218,7 +218,7 @@ GEM
     docile (1.3.2)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
-    doorkeeper (5.2.1)
+    doorkeeper (5.2.2)
       railties (>= 5)
     dotenv (2.7.5)
     dotenv-rails (2.7.5)
@@ -503,7 +503,7 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
-    rake (13.0.0)
+    rake (13.0.1)
     rdf (3.0.12)
       hamster (~> 3.0)
       link_header (~> 0.0, >= 0.0.8)