chore(deps): bump metrics.version from 4.2.26 to 4.2.28

Bumps `metrics.version` from 4.2.26 to 4.2.28.

Updates `io.dropwizard.metrics:metrics-core` from 4.2.26 to 4.2.28
- [Release notes](https://github.com/dropwizard/metrics/releases)
- [Commits](dropwizard/metrics@v4.2.26...v4.2.28)

Updates `io.dropwizard.metrics:metrics-json` from 4.2.26 to 4.2.28
- [Release notes](https://github.com/dropwizard/metrics/releases)
- [Commits](dropwizard/metrics@v4.2.26...v4.2.28)

Updates `io.dropwizard.metrics:metrics-jmx` from 4.2.26 to 4.2.28
- [Release notes](https://github.com/dropwizard/metrics/releases)
- [Commits](dropwizard/metrics@v4.2.26...v4.2.28)

Updates `io.dropwizard.metrics:metrics-jvm` from 4.2.26 to 4.2.28
- [Release notes](https://github.com/dropwizard/metrics/releases)
- [Commits](dropwizard/metrics@v4.2.26...v4.2.28)

---
updated-dependencies:
- dependency-name: io.dropwizard.metrics:metrics-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.dropwizard.metrics:metrics-json
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.dropwizard.metrics:metrics-jmx
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.dropwizard.metrics:metrics-jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

agent/pom.xml

@@ -12,7 +12,7 @@
 
     <properties>
         <surefire.version>3.3.1</surefire.version>
-        <metrics.version>4.2.26</metrics.version>
+        <metrics.version>4.2.28</metrics.version>
         <project.rootdir>${project.basedir}/../</project.rootdir>
     </properties>