Bump org.thymeleaf:thymeleaf from 3.1.3.RELEASE to 3.1.5.RELEASE

Bumps org.thymeleaf:thymeleaf from 3.1.3.RELEASE to 3.1.5.RELEASE.

---
updated-dependencies:
- dependency-name: org.thymeleaf:thymeleaf
  dependency-version: 3.1.5.RELEASE
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -85,7 +85,7 @@
     <dependency>
       <groupId>org.thymeleaf</groupId>
       <artifactId>thymeleaf</artifactId>
-      <version>3.1.3.RELEASE</version>
+      <version>3.1.5.RELEASE</version>
     </dependency>
 
     <dependency>