Update Micrometer Prometheus release #9225
Merged
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Description
Resolves #9208
(Earlier PR did not update the Micrometer Prometheus release as it should have.)
This PR updates the release of Micrometer used in Helidon.
As described in the Micrometer migration guide we are continuing to use the older Prometheus Java client (release 0.x instead of the newer 1.x). That's because the Helidon code uses types that were changed in a backward-incompatible way in the Micrometer Prometheus code.
In preparing for a possible Helidon 5.0 release, we should clean this up as a backward-incompatible change in adopting the newer client.
Documentation
No doc impact.