Update dependency doorkeeper to v5.9.1

Author: renovate[bot]

Gemfile

@@ -24,7 +24,7 @@ gem "with_advisory_lock"
 gem "devise"
 gem "devise-doorkeeper"
 gem "devise-encryptable"
-gem "doorkeeper", "5.9.0"
+gem "doorkeeper", "5.9.1"
 gem "doorkeeper-jwt"
 gem "doorkeeper-openid_connect"
 gem "pundit"

Gemfile.lock

@@ -246,7 +246,7 @@ GEM
     domain_prefix (1.0.20241203)
       json
       simpleidn (>= 0.0.5)
-    doorkeeper (5.9.0)
+    doorkeeper (5.9.1)
       railties (>= 5)
     doorkeeper-jwt (0.4.2)
       jwt (>= 2.1)
@@ -733,7 +733,7 @@ DEPENDENCIES
   devise-doorkeeper
   devise-encryptable
   domain_prefix
-  doorkeeper (= 5.9.0)
+  doorkeeper (= 5.9.1)
   doorkeeper-jwt
   doorkeeper-openid_connect
   dotenv-rails