Setting CGO_ENABLED=0 for v1.30

[kyleconroy]

Earlier this year we switched to using a version of the PostgreSQL parser that didn't require cgo. For v1.30, I'm planning on releasing binaries that are build slightly differently. The old build command was

go build -ldflags="-s -w -extldflags \"-static\"" ./cmd/sqlc

and the new build will be

CGO_ENABLED=0 GOOS={os} GOARCH={arch} go build -ldflags="-s -w" ./cmd/sqlc

Before officially changing the build, I wanted to gather input from the community, specifically if this would cause any issues with your current setup.