thanos: error: unknown long flag '--block-sync-concurrency'

[NFarrington]

Describe the bug

The flag --block-sync-concurrency was removed from Thanos compactor in v0.27.0 onwards - https://github.com/thanos-io/thanos/blob/main/CHANGELOG.md#v0270---20220705

Steps to reproduce the issue:

1. Deploy v0.4.6 of the Thanos chart with Thanos v0.27.0 or greater (Values.image.tag: v0.27.0).
2. Wait for the Thanos compactor pod to fail to start.
3. Observe the following error in the pod logs: thanos: error: unknown long flag '--block-sync-concurrency'

Expected behavior

The --block-sync-concurrency flag is not used, and the compactor pod starts successfully.

Additional context

banzai-charts/thanos/templates/compact-deployment.yaml

Line 62 in 1612d51

- "--block-sync-concurrency={{ .Values.compact.blockSyncConcurrency }}"