Upgrade deps, fix lint failures (backport #133)

[mergify]

The docker package upgrades automatically when pulling petri in as a dep which breaks things.

This bumps the dependency and fixes a bunch of lint issues.

---

This is an automatic backport of pull request #133 done by Mergify.

[mergify]

Cherry-pick of 5a07fe1 has failed:

On branch mergify/bp/release/v1.x.x/pr-133
Your branch is up to date with 'origin/release/v1.x.x'.

You are currently cherry-picking commit 5a07fe1.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   cosmos/node/node.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   core/go.mod
	both modified:   core/go.sum
	both modified:   core/provider/digitalocean/task.go
	both modified:   core/provider/docker/network.go
	both modified:   core/provider/docker/task.go
	both modified:   core/provider/docker/volume.go
	both modified:   cosmos/go.mod
	both modified:   cosmos/go.sum

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally