Update Checkstyle

Issue gh-14178

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/oidc/authentication/OidcIdTokenDecoderFactory.java

@@ -171,7 +171,7 @@ public final class OidcIdTokenDecoderFactory implements JwtDecoderFactory<Client
 			}
 			return NimbusJwtDecoder.withJwkSetUri(jwkSetUri)
 				.jwsAlgorithm((SignatureAlgorithm) jwsAlgorithm)
-				.restOperations(restOperationsFactory.apply(clientRegistration))
+				.restOperations(this.restOperationsFactory.apply(clientRegistration))
 				.build();
 		}
 		if (jwsAlgorithm != null && MacAlgorithm.class.isAssignableFrom(jwsAlgorithm.getClass())) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/oidc/authentication/ReactiveOidcIdTokenDecoderFactory.java

@@ -168,7 +168,7 @@ public final class ReactiveOidcIdTokenDecoderFactory implements ReactiveJwtDecod
 			}
 			return NimbusReactiveJwtDecoder.withJwkSetUri(jwkSetUri)
 				.jwsAlgorithm((SignatureAlgorithm) jwsAlgorithm)
-				.webClient(webClientFactory.apply(clientRegistration))
+				.webClient(this.webClientFactory.apply(clientRegistration))
 				.build();
 		}
 		if (jwsAlgorithm != null && MacAlgorithm.class.isAssignableFrom(jwsAlgorithm.getClass())) {