Bump io.micrometer:micrometer-bom from 1.12.7 to 1.12.8

Bumps [io.micrometer:micrometer-bom](https://github.com/micrometer-metrics/micrometer) from 1.12.7 to 1.12.8.
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](micrometer-metrics/micrometer@v1.12.7...v1.12.8)

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

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -61,7 +61,7 @@ ext {
 	logbackVersion = '1.4.14'
 	lz4Version = '1.8.0'
 	micrometerDocsVersion = '1.0.3'
-	micrometerVersion = '1.12.7'
+	micrometerVersion = '1.12.8'
 	micrometerTracingVersion = '1.2.8'
 	mockitoVersion = '5.6.0'
 	rabbitmqStreamVersion = '0.14.0'