Downgrade to golangci-lint 1.19.1 (#596)
Downgrade to golangci-lint 1.19.1 (#596)

The current version we are on right now has some bugs where it randomly
fails to catch lint errors, which causes bad PRs to get merged then
break all open PRs. Reverting to an older version that does not have
these issues.
istio/tools,istio/tools,istio/tools,istio/tools,istio/tools,istio/tools