Fix core regression

Accidentally pushed some new OAuth2 code when creating this repository. Reverted.

Author: katsumag

.gitmodules

@@ -1,3 +1,4 @@
 [submodule "core/src/main/resources/frontend"]
 	path = core/src/main/resources/frontend
 	url = https://github.com/osable/frontend.git
+	branch = release

core/build.gradle.kts

@@ -14,7 +14,7 @@ dependencies {
     // Spring MVC
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
-    implementation("org.springframework.boot:spring-boot-starter-oauth2-resource-server")
+    implementation("org.springframework.boot:spring-boot-starter-oauth2-client")
 
     implementation("org.springframework.boot:spring-boot-starter-webflux")
 

core/src/main/kotlin/net/osable/core/GitHubReactiveOpaqueTokenIntrospector.kt

@@ -31,7 +31,7 @@ class SecurityConfiguration {
         }.csrf {
             // Configure CSRF token
             it.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
-        }.oauth2ResourceServer()
+        }.oauth2Client()
 
         return http.build()
     }