Linkerd - stable-2.12.4

stable-2.12.4

This stable release fixes a memory leak in the Destination controller, and also
includes other bug fixes for the Linkerd control plane, CLI, and extensions.

• CLI

• Fixed an issue in the CLI where --identity-external-ca would set an
  incorrect field (thanks @anoxape!)

• Control Plane

• Fixed an issue in the destination controller's cache that could result in
  stale endpoints when using EndpointSlice objects
• Fixed control plane components failing liveness probes while waiting for
  caches to sync, which could prevent the control plane from starting in large
  clusters

• Fixed a memory leak in the Destination controller

• linkerd-proxy-init

• Added resource limits for noop init container, to support environments
  where resource quotas are required

• Helm

• Added namespace to namespace-metadata resources in Helm (thanks
  @joebowbeer!)

• Fixed potential nil pointer dereference errors in template evaluation

• Extensions

• Fixed an issue where linkerd viz tap would display wrong latency/duration
  value (thanks @olegy2008!)