build(deps): bump github.com/containernetworking/plugins (#66)

Bumps [github.com/containernetworking/plugins](https://github.com/containernetworking/plugins) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/containernetworking/plugins/releases)
- [Commits](containernetworking/plugins@v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: github.com/containernetworking/plugins
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -4,10 +4,10 @@ go 1.11
 
 require (
  github.com/containernetworking/cni v1.1.2
- github.com/containernetworking/plugins v1.3.0
+ github.com/containernetworking/plugins v1.4.0
  github.com/hashicorp/go-multierror v1.1.1
  github.com/onsi/ginkgo v1.16.5 // indirect
  github.com/stretchr/testify v1.8.4
  github.com/vishvananda/netlink v1.2.1-beta.2
- golang.org/x/sys v0.13.0
+ golang.org/x/sys v0.15.0
 )