build(deps): bump golang.org/x/net in /tor

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.0.0-20211015210444-4f30a5c0130f 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: direct:production
...

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

tor/go.mod

@@ -5,8 +5,7 @@ require (
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f
 	github.com/miekg/dns v1.1.43
 	github.com/stretchr/testify v1.7.0
-	golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f
-	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/net v0.7.0
 )
 
 go 1.16