Bump io.micrometer:micrometer-bom from 1.13.8 to 1.13.9

Bumps [io.micrometer:micrometer-bom](https://github.com/micrometer-metrics/micrometer) from 1.13.8 to 1.13.9.
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.13.8...v1.13.9)

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

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

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ commons-compress = "1.26.2"
 jackson = "2.17.3"
 jsr305 = "3.0.2"
 logback = "1.5.12"
-micrometer = "1.13.8"
+micrometer = "1.13.9"
 micrometer-docs-gen = "1.0.4"
 micrometer-tracing = "1.3.6"
 protobuf = "3.25.5"