Merge pull request #6381 from Raja Dilip Kolli

* gh-6381:
  Upgrade to Thymeleaf 2.1.5.RELEASE

Author: wilkinsona

spring-boot-dependencies/pom.xml

@@ -151,7 +151,7 @@
 		<spring-ws.version>2.2.3.RELEASE</spring-ws.version>
 		<statsd-client.version>3.1.0</statsd-client.version>
 		<sun-mail.version>${javax-mail.version}</sun-mail.version>
-		<thymeleaf.version>2.1.4.RELEASE</thymeleaf.version>
+		<thymeleaf.version>2.1.5.RELEASE</thymeleaf.version>
 		<thymeleaf-extras-springsecurity4.version>2.1.2.RELEASE</thymeleaf-extras-springsecurity4.version>
 		<thymeleaf-extras-conditionalcomments.version>2.1.1.RELEASE</thymeleaf-extras-conditionalcomments.version>
 		<thymeleaf-layout-dialect.version>1.3.3</thymeleaf-layout-dialect.version>