Bump prometheus.version from 0.15.0 to 0.16.0 (#276)

Bumps `prometheus.version` from 0.15.0 to 0.16.0.

Updates `simpleclient` from 0.15.0 to 0.16.0
- [Release notes](https://github.com/prometheus/client_java/releases)
- [Commits](https://github.com/prometheus/client_java/compare/parent-0.15.0...parent-0.16.0)

Updates `simpleclient_common` from 0.15.0 to 0.16.0
- [Release notes](https://github.com/prometheus/client_java/releases)
- [Commits](https://github.com/prometheus/client_java/compare/parent-0.15.0...parent-0.16.0)

Updates `simpleclient_pushgateway` from 0.15.0 to 0.16.0
- [Release notes](https://github.com/prometheus/client_java/releases)
- [Commits](https://github.com/prometheus/client_java/compare/parent-0.15.0...parent-0.16.0)

Updates `simpleclient_hotspot` from 0.15.0 to 0.16.0
- [Release notes](https://github.com/prometheus/client_java/releases)
- [Commits](https://github.com/prometheus/client_java/compare/parent-0.15.0...parent-0.16.0)

---
updated-dependencies:
- dependency-name: io.prometheus:simpleclient
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.prometheus:simpleclient_common
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.prometheus:simpleclient_pushgateway
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.prometheus:simpleclient_hotspot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

planetiler-core/pom.xml

@@ -18,7 +18,7 @@
   <properties>
     <geotools.version>27.0</geotools.version>
     <log4j.version>2.17.2</log4j.version>
-    <prometheus.version>0.15.0</prometheus.version>
+    <prometheus.version>0.16.0</prometheus.version>
   </properties>
 
   <dependencies>