Fix goreleaser pipeline trigger syntax (temporalio#118)

Bump version to v0.4.0 (temporalio#104)

Bump version to v0.3.0 (temporalio#85)

* Bump version to v0.3.0

* Update headers/headers.go

Set version to v0.2.0 (temporalio#44)

Merge pull request temporalio#28 from temporalio/fix-goreleaser

Remove extra goreleaser config