Bump spring-boot.version from 3.1.4 to 3.1.5

Bumps `spring-boot.version` from 3.1.4 to 3.1.5.

Updates `org.springframework.boot:spring-boot-starter-parent` from 3.1.4 to 3.1.5
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.1.4...v3.1.5)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 3.1.4 to 3.1.5
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.1.4...v3.1.5)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-parent
  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

@@ -55,7 +55,7 @@
         <kotlinx-coroutines.version>1.7.3</kotlinx-coroutines.version>
         <kotlinx-coroutines-debug.version>1.7.3</kotlinx-coroutines-debug.version>
 
-        <spring-boot.version>3.1.4</spring-boot.version>
+        <spring-boot.version>3.1.5</spring-boot.version>
         <springdoc-openapi-starter-webmvc-ui.version>2.2.0</springdoc-openapi-starter-webmvc-ui.version>
 
         <postgresql.version>42.6.0</postgresql.version>