Bump io.micrometer:micrometer-bom from 1.15.11 to 1.15.12

Bumps [io.micrometer:micrometer-bom](https://github.com/micrometer-metrics/micrometer) from 1.15.11 to 1.15.12.
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](micrometer-metrics/micrometer@v1.15.11...v1.15.12)

---
updated-dependencies:
- dependency-name: io.micrometer:micrometer-bom
  dependency-version: 1.15.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -85,7 +85,7 @@ ext {
     log4jVersion = '2.24.3'
     mailVersion = '2.0.5'
     micrometerTracingVersion = '1.5.11'
-    micrometerVersion = '1.15.11'
+    micrometerVersion = '1.15.12'
     mockitoVersion = '5.18.0'
     mongoDriverVersion = '5.5.2'
     mysqlVersion = '9.3.0'