Refine UriTemplate match pattern

The match/matches methods of UriTemplate use a regex with (.*) in place
of URI variables, which work fine except in the end where such a
pattern can match greedily more than one segment.

This commit updates the regex to use ([^/]*) instead since URI
variables are only meant to be used within a single path segment.

Issue: SPR-16169

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

@@ -212,7 +212,7 @@ public class UriTemplate implements Serializable {
 						String variable = builder.toString();
 						int idx = variable.indexOf(':');
 						if (idx == -1) {
-							pattern.append("(.*)");
+							pattern.append("([^/]*)");
 							variableNames.add(variable);
 						}
 						else {