build(deps): bump spring.boot.version from 3.1.5 to 3.1.6

Bumps `spring.boot.version` from 3.1.5 to 3.1.6.

Updates `org.springframework.boot:spring-boot-dependencies` from 3.1.5 to 3.1.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.1.5...v3.1.6)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 3.1.5 to 3.1.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.1.5...v3.1.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -19,7 +19,7 @@
     <!-- release parent settings -->
     <version.java>17</version.java>
     <feel.version>1.17.3</feel.version>
-    <spring.boot.version>3.1.5</spring.boot.version>
+    <spring.boot.version>3.1.6</spring.boot.version>
   </properties>
 
   <dependencyManagement>