Closes gh-11440 - Formatting

Author: Crain-32

Diff for: oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/DefaultOAuth2TokenRequestHeadersConverter.java

@@ -17,8 +17,8 @@
 package org.springframework.security.oauth2.client.endpoint;
 
 import java.net.URLEncoder;
-import java.util.Collections;
 import java.nio.charset.StandardCharsets;
+import java.util.Collections;
 
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.http.HttpHeaders;