[v2.11] Update goreleaser to build .tar.gz for linux, .zip for windows

[alexbozhenko]

There is no point in building .tar.gz. for windows and .zip for linux.

When .tar.gz. was added in #1589
goreleaser did not have a feature to override the archive.
Now it does(found it in https://github.com/golangci/golangci-lint/blob/master/.golangci.yml)

Test plan:

# goreleaser release --snapshot --clean -f .goreleaser.yml
# find dist/ -name '*.zip' -or -name '*.tar.gz' | sort
dist/nats-server-v2.11.0-dev-darwin-amd64.tar.gz
dist/nats-server-v2.11.0-dev-darwin-arm64.tar.gz
dist/nats-server-v2.11.0-dev-freebsd-amd64.tar.gz
dist/nats-server-v2.11.0-dev-linux-386.tar.gz
dist/nats-server-v2.11.0-dev-linux-amd64.tar.gz
dist/nats-server-v2.11.0-dev-linux-arm64.tar.gz
dist/nats-server-v2.11.0-dev-linux-arm6.tar.gz
dist/nats-server-v2.11.0-dev-linux-arm7.tar.gz
dist/nats-server-v2.11.0-dev-linux-mips64le.tar.gz
dist/nats-server-v2.11.0-dev-linux-ppc64le.tar.gz
dist/nats-server-v2.11.0-dev-linux-s390x.tar.gz
dist/nats-server-v2.11.0-dev-windows-386.zip
dist/nats-server-v2.11.0-dev-windows-amd64.zip
dist/nats-server-v2.11.0-dev-windows-arm64.zip
dist/nats-server-v2.11.0-dev-windows-arm6.zip
dist/nats-server-v2.11.0-dev-windows-arm7.zip

Signed-off-by: Alex Bozhenko [email protected]

[wallyqs]

LGTM, there is a chance that folks depend on this but v2.11 would be a good cut-off point.