Bump org.springframework.boot:spring-boot-dependencies (#532)

Bumps [org.springframework.boot:spring-boot-dependencies](https://github.com/spring-projects/spring-boot) from 2.7.14 to 2.7.15.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.14...v2.7.15)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

dependencyManagement/build.gradle.kts

@@ -43,7 +43,7 @@ val DEPENDENCY_BOMS = listOf(
   "io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha:$otelAlphaVersion",
   "org.apache.logging.log4j:log4j-bom:2.20.0",
   "org.junit:junit-bom:5.10.0",
-  "org.springframework.boot:spring-boot-dependencies:2.7.14",
+  "org.springframework.boot:spring-boot-dependencies:2.7.15",
   "org.testcontainers:testcontainers-bom:1.19.0",
   "software.amazon.awssdk:bom:2.20.140",
 )