Use parenthesis with single-arg lambdas

Use regular expression search/replace to ensure all single-arg
lambdas have parenthesis. This aligns with the style used in Spring
Boot and ensure that single-arg and multi-arg lambdas are consistent.

Issue gh-8945

samples/boot/oauth2authorizationserver/src/main/java/sample/AuthorizationServerConfiguration.java

@@ -167,7 +167,7 @@ class UserConfig extends WebSecurityConfigurerAdapter {
 				.and()
 			.httpBasic()
 				.and()
-			.csrf().ignoringRequestMatchers(request -> "/introspect".equals(request.getRequestURI()));
+			.csrf().ignoringRequestMatchers((request) -> "/introspect".equals(request.getRequestURI()));
 	}
 
 	@Bean