Bump golang.org/x/net in /v3/integrations/nrgrpc

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.0.0-20201021035429-f5854403a974 to 0.7.0.
- [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>

v3/integrations/nrgrpc/go.mod

@@ -14,9 +14,9 @@ require (
 )
 
 require (
-	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
-	golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4 // indirect
-	golang.org/x/text v0.3.3 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
 	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
 )