Fluentbit: Rename chart for OCI consistency

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/apps/core/fluentbit/-/blob/0.21.7-bb.1/CHANGELOG.md

Package MR

https://repo1.dso.mil/big-bang/apps/core/fluentbit/-/merge_requests/95

Issue

Related to #1383 (closed)