build(deps): bump github.com/docker/go-connections from 0.3.0 to 0.4.0

Bumps [github.com/docker/go-connections](https://github.com/docker/go-connections) from 0.3.0 to 0.4.0.
- [Release notes](https://github.com/docker/go-connections/releases)
- [Commits](docker/go-connections@v0.3.0...v0.4.0)

---
updated-dependencies:
- dependency-name: github.com/docker/go-connections
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/aws/aws-sdk-go v1.42.34
 	github.com/coredns/coredns v1.1.2
 	github.com/coreos/go-oidc v2.1.0+incompatible
-	github.com/docker/go-connections v0.3.0
+	github.com/docker/go-connections v0.4.0
 	github.com/envoyproxy/go-control-plane v0.10.1
 	github.com/fsnotify/fsnotify v1.5.1
 	github.com/golang/protobuf v1.5.0

go.sum

@@ -155,8 +155,8 @@ github.com/dimchansky/utfbom v1.1.0 h1:FcM3g+nofKgUteL8dm/UpdRXNC9KmADgTpLKsu0TR
 github.com/dimchansky/utfbom v1.1.0/go.mod h1:rO41eb7gLfo8SF1jd9F8HplJm1Fewwi4mQvIirEdv+8=
 github.com/dnaeon/go-vcr v1.0.1 h1:r8L/HqC0Hje5AXMu1ooW8oyQyOFv4GxqpL0nRP7SLLY=
 github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyGc8n1E=
-github.com/docker/go-connections v0.3.0 h1:3lOnM9cSzgGwx8VfK/NGOW5fLQ0GjIlCkaktF+n1M6o=
-github.com/docker/go-connections v0.3.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
+github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
+github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=