build(deps): bump golang.org/x/sync in /contrib/registry/zookeeper

Bumps [golang.org/x/sync](https://github.com/golang/sync) from 0.8.0 to 0.9.0.
- [Commits](golang/sync@v0.8.0...v0.9.0)

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

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

contrib/registry/zookeeper/go.mod

@@ -5,7 +5,7 @@ go 1.19
 require (
 	github.com/go-kratos/kratos/v2 v2.8.2
 	github.com/go-zookeeper/zk v1.0.3
-	golang.org/x/sync v0.8.0
+	golang.org/x/sync v0.9.0
 )
 
 replace github.com/go-kratos/kratos/v2 => ../../../

contrib/registry/zookeeper/go.sum

@@ -1,4 +1,4 @@
 github.com/go-zookeeper/zk v1.0.3 h1:7M2kwOsc//9VeeFiPtf+uSJlVpU66x9Ba5+8XK7/TDg=
 github.com/go-zookeeper/zk v1.0.3/go.mod h1:nOB03cncLtlp4t+UAkGSV+9beXP/akpekBwL+UX1Qcw=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=