Adapt assertions to recent changes in Spring Security

See https://github.com/spring-projects/spring-authorization-server/issues/2219

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-oauth2-authorization-server/src/test/java/smoketest/oauth2/server/SampleOAuth2AuthorizationServerApplicationTests.java

@@ -70,10 +70,10 @@ class SampleOAuth2AuthorizationServerApplicationTests {
 		assertThat(config.getTokenRevocationEndpoint()).hasToString("https://provider.com/revoke");
 		assertThat(config.getEndSessionEndpoint()).hasToString("https://provider.com/logout");
 		assertThat(config.getTokenIntrospectionEndpoint()).hasToString("https://provider.com/introspect");
-		assertThat(config.getPushedAuthorizationRequestEndpoint()).hasToString("https://provider.com/par");
 		assertThat(config.getUserInfoEndpoint()).hasToString("https://provider.com/user");
-		// OIDC Client Registration is disabled by default
+		// PAR endpoint and OIDC Client Registration are disabled by default
 		assertThat(config.getClientRegistrationEndpoint()).isNull();
+		assertThat(config.getPushedAuthorizationRequestEndpoint()).isNull();
 	}
 
 	@Test
@@ -89,9 +89,9 @@ class SampleOAuth2AuthorizationServerApplicationTests {
 		assertThat(config.getJwkSetUrl()).hasToString("https://provider.com/jwks");
 		assertThat(config.getTokenRevocationEndpoint()).hasToString("https://provider.com/revoke");
 		assertThat(config.getTokenIntrospectionEndpoint()).hasToString("https://provider.com/introspect");
-		assertThat(config.getPushedAuthorizationRequestEndpoint()).hasToString("https://provider.com/par");
-		// OIDC Client Registration is disabled by default
+		// PAR endpoint and OIDC Client Registration are disabled by default
 		assertThat(config.getClientRegistrationEndpoint()).isNull();
+		assertThat(config.getPushedAuthorizationRequestEndpoint()).isNull();
 	}
 
 	@Test