Bump io.micrometer:micrometer-tracing-bom from 1.5.5 to 1.5.6 (#10569)

Bumps [io.micrometer:micrometer-tracing-bom](https://github.com/micrometer-metrics/tracing) from 1.5.5 to 1.5.6.
- [Release notes](https://github.com/micrometer-metrics/tracing/releases)
- [Commits](micrometer-metrics/tracing@v1.5.5...v1.5.6)

---
updated-dependencies:
- dependency-name: io.micrometer:micrometer-tracing-bom
  dependency-version: 1.5.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -83,7 +83,7 @@ ext {
     lettuceVersion = '6.6.0.RELEASE'
     log4jVersion = '2.24.3'
     mailVersion = '2.0.5'
-    micrometerTracingVersion = '1.5.5'
+    micrometerTracingVersion = '1.5.6'
     micrometerVersion = '1.15.5'
     mockitoVersion = '5.17.0'
     mongoDriverVersion = '5.5.2'