Update to com.squareup.okhttp3 4.12.0

Closes gh-1460

dependencies/spring-authorization-server-dependencies.gradle

@@ -16,8 +16,8 @@ dependencies {
 		api "org.junit.jupiter:junit-jupiter:5.10.1"
 		api "org.assertj:assertj-core:3.24.2"
 		api "org.mockito:mockito-core:4.11.0"
-		api "com.squareup.okhttp3:mockwebserver:4.11.0"
-		api "com.squareup.okhttp3:okhttp:4.11.0"
+		api "com.squareup.okhttp3:mockwebserver:4.12.0"
+		api "com.squareup.okhttp3:okhttp:4.12.0"
 		api "com.jayway.jsonpath:json-path:2.8.0"
 		api "org.hsqldb:hsqldb:2.7.2"
 	}