build(deps): bump github.com/docker/cli (#1154)

Bumps [github.com/docker/cli](https://github.com/docker/cli) from 20.10.14+incompatible to 20.10.15+incompatible.
- [Release notes](https://github.com/docker/cli/releases)
- [Commits](https://github.com/docker/cli/compare/v20.10.14...v20.10.15)

---
updated-dependencies:
- dependency-name: github.com/docker/cli
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/AlecAivazis/survey/v2 v2.3.4
 	github.com/Masterminds/semver v1.5.0
 	github.com/andreaskoch/go-fswatch v1.0.0
-	github.com/docker/cli v20.10.14+incompatible
+	github.com/docker/cli v20.10.15+incompatible
 	github.com/docker/distribution v2.8.1+incompatible
 	github.com/docker/docker v20.10.14+incompatible
 	github.com/go-git/go-billy/v5 v5.3.1