deps: bump io.micrometer:micrometer-tracing-bom from 1.4.2 to 1.4.3 (#3547)

Bumps [io.micrometer:micrometer-tracing-bom](https://github.com/micrometer-metrics/tracing) from 1.4.2 to 1.4.3.
- [Release notes](https://github.com/micrometer-metrics/tracing/releases)
- [Commits](micrometer-metrics/tracing@v1.4.2...v1.4.3)

---
updated-dependencies:
- dependency-name: io.micrometer:micrometer-tracing-bom
  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]

pom.xml

@@ -37,7 +37,7 @@
 		<spring-cloud-gcp-dependencies.version>${project.parent.version}</spring-cloud-gcp-dependencies.version>
 		<zipkin-gcp.version>2.2.6</zipkin-gcp.version>
 		<java-cfenv.version>2.5.0</java-cfenv.version>
-		<micrometer-tracing.version>1.4.2</micrometer-tracing.version>
+		<micrometer-tracing.version>1.4.3</micrometer-tracing.version>
 
 		<!-- Plugin versions -->
 		<maven-compiler-plugin.version>3.13.0</maven-compiler-plugin.version>