fix(charts): update helm release linkerd-control-plane to v1.12.2

[renovate]

This PR contains the following updates:

Package	Update	Change
linkerd-control-plane (source)	patch	1.12.1 -> 1.12.2

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Release Notes

linkerd/linkerd2

v1.12.2

This edge removes the default SMI functionality that is included in
installations now that the linkerd-smi extension provides these resources. It
also relaxes the proxy-init's privileged value to only be set to true when
needed by certain installation configurations.

Along with some bug fixes, the repository's issue and feature request templates
have been updated to forms; check them when opening a new
issue! (thanks
@​mikutas).

• Removed SMI functionality in the default Linkerd installation; this is now
  part of the linkerd-smi extension
• Fixed autocompletion of the --context flag (thanks @​mikutas!)
• Added support for conditionally setting proxy-init's privileged: true only
  when needed (thanks @​alex-berger!)
• Added support for controlling opaque ports through the Server resource
• Fixed an issue where linkerd check would compare proxy versions of
  uninjected pods leading to incorrect errors
• Relaxed extension checks so that the CLI still works when not all extension
  proxies are healthy
• Added the --default-inbound-policy flag to linkerd inject for setting a
  non-default inbound policy on injected workloads (thanks @​ahmedalhulaibi!)

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