feat: update golang in use for binary building
feat: update golang in use for binary building

This change is not necessary other than for good house-keeping. All dokku-related binaries should _also_ be built with the latest golang.

dokku/dokku,progrium/dokku,dokku/dokku,dokku/dokku,progrium/dokku,progrium/dokku,alexquick/dokku,claytonbrown/dokku,alexquick/dokku,dokku/dokku,dokku/dokku,progrium/dokku,dokku/dokku,alexquick/dokku,jimjag/dokku,claytonbrown/dokku,dokku/dokku,claytonbrown/dokku,jimjag/dokku,jimjag/dokku,dokku/dokku,jimjag/dokku,alexquick/dokku,claytonbrown/dokku,jimjag/dokku,claytonbrown/dokku,jimjag/dokku,alexquick/dokku,jimjag/dokku,alexquick/dokku,claytonbrown/dokku,claytonbrown/dokku,progrium/dokku,alexquick/dokku,progrium/dokku,progrium/dokku,jimjag/dokku,alexquick/dokku,claytonbrown/dokku,progrium/dokku