Bump micrometer.version from 1.9.0 to 1.9.1 (#3497)
Bump micrometer.version from 1.9.0 to 1.9.1 (#3497)

Bumps `micrometer.version` from 1.9.0 to 1.9.1.

Updates `micrometer-core` from 1.9.0 to 1.9.1
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.9.0...v1.9.1)

Updates `micrometer-registry-prometheus` from 1.9.0 to 1.9.1
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.9.0...v1.9.1)

Updates `micrometer-registry-statsd` from 1.9.0 to 1.9.1
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.9.0...v1.9.1)

Updates `micrometer-registry-cloudwatch2` from 1.9.0 to 1.9.1
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.9.0...v1.9.1)

Updates `micrometer-registry-kairos` from 1.9.0 to 1.9.1
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](https://github.com/micrometer-metrics/micrometer/compare/v1.9.0...v1.9.1)
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