AntPathMatcher allows newline in URI template variables

Closes gh-23252

spring-core/src/main/java/org/springframework/util/AntPathMatcher.java

@@ -644,7 +644,7 @@ public class AntPathMatcher implements PathMatcher {
 
 		private static final Pattern GLOB_PATTERN = Pattern.compile("\\?|\\*|\\{((?:\\{[^/]+?}|[^/{}]|\\\\[{}])+?)}");
 
-		private static final String DEFAULT_VARIABLE_PATTERN = "(.*)";
+		private static final String DEFAULT_VARIABLE_PATTERN = "((?s).*)";
 
 		private final String rawPattern;
 

spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java

@@ -130,6 +130,7 @@ class AntPathMatcherTests {
 		assertThat(pathMatcher.match("", "")).isTrue();
 
 		assertThat(pathMatcher.match("/{bla}.*", "/testing.html")).isTrue();
+		assertThat(pathMatcher.match("/{bla}", "//x\ny")).isTrue();
 	}
 
 	@Test