Bump org.thymeleaf:thymeleaf in /tooling

Bumps org.thymeleaf:thymeleaf from 3.0.14.RELEASE to 3.1.5.RELEASE.

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

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

Author: dependabot[bot]

tooling/pom.xml

@@ -172,7 +172,7 @@
         <dependency>
             <groupId>org.thymeleaf</groupId>
             <artifactId>thymeleaf</artifactId>
-            <version>3.0.14.RELEASE</version>
+            <version>3.1.5.RELEASE</version>
         </dependency>
 
         <dependency>