Update micrometer packages to v1.12.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.micrometer:micrometer-registry-prometheus	1.12.5 -> 1.12.6
io.micrometer:micrometer-core	1.12.5 -> 1.12.6

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Release Notes

micrometer-metrics/micrometer (io.micrometer:micrometer-registry-prometheus)

### [`v1.12.6`](https://togithub.com/micrometer-metrics/micrometer/releases/tag/v1.12.6): 1.12.6 #### :warning: Noteworthy - Downgrade to Mockito 4 from Mockito 5 in micrometer-observation-test module [https://github.com/micrometer-metrics/micrometer/issues/4968](https://togithub.com/micrometer-metrics/micrometer/issues/4968) #### :lady_beetle: Bug Fixes - NullPointerException in DefaultJmsProcessObservationConvention [#​4966](https://togithub.com/micrometer-metrics/micrometer/issues/4966) - OTLP Gauge datapoint timestamp should be time at sampling [#​5044](https://togithub.com/micrometer-metrics/micrometer/issues/5044) - AnnotationHandler can't see methods from parent class [#​4983](https://togithub.com/micrometer-metrics/micrometer/issues/4983) #### :hammer: Dependency Upgrades - Bump com.amazonaws:aws-java-sdk-cloudwatch from 1.12.696 to 1.12.720 [#​5042](https://togithub.com/micrometer-metrics/micrometer/pull/5042) [#​5086](https://togithub.com/micrometer-metrics/micrometer/pull/5086) - Bump com.dynatrace.metric.util:dynatrace-metric-utils-java from 2.2.0 to 2.2.1 [#​5005](https://togithub.com/micrometer-metrics/micrometer/pull/5005) - Bump com.signalfx.public:signalfx-java from 1.0.40 to 1.0.41 [#​5000](https://togithub.com/micrometer-metrics/micrometer/pull/5000) - Bump com.netflix.spectator:spectator-reg-atlas from 1.7.11 to 1.7.12 [#​4994](https://togithub.com/micrometer-metrics/micrometer/pull/4994) #### :heart: Contributors Thank you to all the contributors who worked on this release: [@​izeye](https://togithub.com/izeye), [@​tdinev](https://togithub.com/tdinev), [@​lenin-jaganathan](https://togithub.com/lenin-jaganathan) and [@​MartinUhlen](https://togithub.com/MartinUhlen)

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