Bump golang.org/x/net from 0.2.0 to 0.4.0 (kataras#2017)

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.2.0 to 0.4.0.
- [Release notes](https://github.com/golang/net/releases)
- [Commits](golang/net@v0.2.0...v0.4.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

go.mod

@@ -41,7 +41,7 @@ require (
 	github.com/yosssi/ace v0.0.5
 	go.etcd.io/bbolt v1.3.6
 	golang.org/x/crypto v0.4.0
-	golang.org/x/net v0.3.0
+	golang.org/x/net v0.4.0
 	golang.org/x/sys v0.3.0
 	golang.org/x/text v0.5.0
 	golang.org/x/time v0.3.0