build(deps): bump prometheus_metrics.version from 1.5.0 to 1.5.1

Bumps `prometheus_metrics.version` from 1.5.0 to 1.5.1.

Updates `io.prometheus:prometheus-metrics-bom` from 1.5.0 to 1.5.1
- [Release notes](https://github.com/prometheus/client_java/releases)
- [Changelog](https://github.com/prometheus/client_java/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_java@v1.5.0...v1.5.1)

Updates `io.prometheus:prometheus-metrics-exporter-pushgateway` from 1.5.0 to 1.5.1

---
updated-dependencies:
- dependency-name: io.prometheus:prometheus-metrics-bom
  dependency-version: 1.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.prometheus:prometheus-metrics-exporter-pushgateway
  dependency-version: 1.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

dubbo-dependencies-bom/pom.xml

@@ -128,7 +128,7 @@
     <micrometer-tracing.version>1.6.5</micrometer-tracing.version>
     <t_digest.version>3.3</t_digest.version>
     <prometheus_client.version>0.16.0</prometheus_client.version>
-    <prometheus_metrics.version>1.5.0</prometheus_metrics.version>
+    <prometheus_metrics.version>1.5.1</prometheus_metrics.version>
     <reactive.version>1.0.4</reactive.version>
     <reactor.version>3.8.5</reactor.version>
     <mutiny.version>2.9.5</mutiny.version>