Bump test/go dependency

This replaces and closes https://github.com/apache/thrift/pull/2774.
diff --git a/test/go/go.mod b/test/go/go.mod
index 0143eba..ff88c9b 100644
--- a/test/go/go.mod
+++ b/test/go/go.mod
@@ -9,7 +9,7 @@
 
 require (
 	golang.org/x/mod v0.4.2 // indirect
-	golang.org/x/sys v0.0.0-20210510120138-977fb7262007 // indirect
+	golang.org/x/sys v0.7.0 // indirect
 	golang.org/x/tools v0.1.1 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )
diff --git a/test/go/go.sum b/test/go/go.sum
index 6904b3e..b6ad545 100644
--- a/test/go/go.sum
+++ b/test/go/go.sum
@@ -16,6 +16,8 @@
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
+golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=