Bump golang.org/x/net in /chaincodes/mygocc

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.0.0-20210423184538-5f58ad60dda6 to 0.7.0.
- [Release notes](https://github.com/golang/net/releases)
- [Commits](https://github.com/golang/net/commits/v0.7.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-type: indirect
...

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

chaincodes/mygocc/go.mod

@@ -19,7 +19,6 @@ require (
 	github.com/stretchr/testify v1.7.0
 	github.com/sykesm/zap-logfmt v0.0.4 // indirect
 	go.uber.org/zap v1.16.0 // indirect
-	golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect
-	golang.org/x/net v0.0.0-20210423184538-5f58ad60dda6 // indirect
+	golang.org/x/net v0.7.0 // indirect
 	google.golang.org/grpc v1.37.0 // indirect
 )