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] <[email protected]>

pom.xml

@@ -80,7 +80,7 @@
         <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <maven-enforcer-plugin.version>3.4.1</maven-enforcer-plugin.version>
         <maven-surefire-plugin.version>3.2.2</maven-surefire-plugin.version>
-        <spring-boot.version>3.1.5</spring-boot.version>
+        <spring-boot.version>3.1.6</spring-boot.version>
         <bc.version>1.77</bc.version>
         <commons-cli.version>1.6.0</commons-cli.version>
         <commons-io.version>2.15.0</commons-io.version>