Fix UriComponentsBuilder.fromUriString parsing error

This commit fixes cases where part of the URI was mistaken for the
userinfo when:
* the URI did not contain any path
* the query string contained the "@"

Issue: SPR-11964

spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java

@@ -62,7 +62,7 @@ public class UriComponentsBuilder {
 
 	private static final String HTTP_PATTERN = "(?i)(http|https):";
 
-	private static final String USERINFO_PATTERN = "([^@/]*)";
+	private static final String USERINFO_PATTERN = "([^@\\[/?#]*)";
 
 	private static final String HOST_IPV4_PATTERN = "[^\\[/?#:]*";