Bump io.micrometer:micrometer-bom from 1.15.0-RC1 to 1.15.0-SNAPSHOT (#9995)

Bumps [io.micrometer:micrometer-bom](https://github.com/micrometer-metrics/micrometer) from 1.15.0-RC1 to 1.15.0-SNAPSHOT.
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/commits)

---
updated-dependencies:
- dependency-name: io.micrometer:micrometer-bom
  dependency-version: 1.15.0-SNAPSHOT
  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>

build.gradle

@@ -93,7 +93,7 @@ ext {
     log4jVersion = '2.24.3'
     mailVersion = '2.0.3'
     micrometerTracingVersion = '1.5.0-RC1'
-    micrometerVersion = '1.15.0-RC1'
+    micrometerVersion = '1.15.0-SNAPSHOT'
     mockitoVersion = '5.16.1'
     mongoDriverVersion = '5.3.1'
     mysqlVersion = '9.2.0'