Update artifactory_exporter from 1.15.1 to 1.16.1

[prometheus-rpm-bot]

https://github.com/peimanja/artifactory_exporter/releases/tag/v1.16.1
Release notes:

## What's Changed
* Add tests, fix typos and minor bugs by @peimanja in https://github.com/peimanja/artifactory_exporter/pull/172
* Fix regex patterns to handle S3 sharding N/A format in filestore usage metrics by @Copilot in https://github.com/peimanja/artifactory_exporter/pull/176
* Add option to select artifacts time interval by @Vvlad1slavV in https://github.com/peimanja/artifactory_exporter/pull/177
* Update README artifacts time interval by @Vvlad1slavV in https://github.com/peimanja/artifactory_exporter/pull/179
* Fix goroutine leak when using request cache by @tkohlmaier in https://github.com/peimanja/artifactory_exporter/pull/178
* Fix RTFS federation metrics unmarshal error by detecting RTFS responses by @Copilot in https://github.com/peimanja/artifactory_exporter/pull/181

## New Contributors
* @Copilot made their first contribution in https://github.com/peimanja/artifactory_exporter/pull/176
* @Vvlad1slavV made their first contribution in https://github.com/peimanja/artifactory_exporter/pull/177

**Full Changelog**: https://github.com/peimanja/artifactory_exporter/compare/v1.16.0...v1.16.1