Apply ResourceHandlerUtils to Groovy markup templates

Closes gh-36902

Author: rstoyanchev

spring-webmvc/src/main/java/org/springframework/web/servlet/view/groovy/GroovyMarkupConfigurer.java

@@ -35,6 +35,7 @@
 import org.springframework.core.io.Resource;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
+import org.springframework.web.servlet.resource.ResourceHandlerUtils;
 
 /**
  * An extension of Groovy's {@link groovy.text.markup.TemplateConfiguration} and
@@ -223,7 +224,11 @@ public void configure(ClassLoader templateClassLoader, TemplateConfiguration con
 		@Override
 		public URL resolveTemplate(String templatePath) throws IOException {
 			Assert.state(this.classLoader != null, "No template ClassLoader available");
-			return GroovyMarkupConfigurer.this.resolveTemplate(this.classLoader, templatePath);
+			String path = ResourceHandlerUtils.normalizeInputPath(templatePath);
+			if (ResourceHandlerUtils.shouldIgnoreInputPath(path)) {
+				throw new IOException("Invalid template path:" + templatePath);
+			}
+			return GroovyMarkupConfigurer.this.resolveTemplate(this.classLoader, path);
 		}
 	}