Bump thymeleaf from 3.0.14.RELEASE to 3.0.15.RELEASE

Bumps [thymeleaf](https://github.com/thymeleaf/thymeleaf) from 3.0.14.RELEASE to 3.0.15.RELEASE.
- [Release notes](https://github.com/thymeleaf/thymeleaf/releases)
- [Changelog](https://github.com/thymeleaf/thymeleaf/blob/3.1-master/ChangeLog.txt)
- [Commits](thymeleaf/thymeleaf@thymeleaf-3.0.14.RELEASE...thymeleaf-3.0.15.RELEASE)

---
updated-dependencies:
- dependency-name: org.thymeleaf:thymeleaf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -69,7 +69,7 @@
   <properties>
     <!-- Dependencies artifact version -->
     <mybatis.version>3.5.9</mybatis.version>
-    <thymeleaf.version>3.0.14.RELEASE</thymeleaf.version>
+    <thymeleaf.version>3.0.15.RELEASE</thymeleaf.version>
 
     <!-- Dependencies plugin version -->
     <asciidoctor-maven-plugin.version>2.2.2</asciidoctor-maven-plugin.version>