GOLANGCI-LINT timeout failing build/integration tests for PRs

[priyawadhwa]

This seems similar to tektoncd/plumbing#241, which the tektoncd/pipeline repo faced in early 2020.

Seems like the fix was adding more nodes to the prow cluster and upgrading golangci-lint to a version which used less memory (1.27).

Our current version already incorporates those changes (1.41) so we could look into adding more nodes to the prow cluster.

For now, I'll try increasing the timeout to 10m and see if that resolves things.

[priyawadhwa]

seems like CPU usage has been hitting 100% over the past few hours but not too often. the build test passed on #188 also passed in <2 minutes, so maybe the cluster just isn't under as much load anymore