Update module golang.org/x/sync to v0.7.0

This MR contains the following updates:

Package	Type	Update	Change
golang.org/x/sync	require	minor	v0.4.0 -> v0.7.0

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go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.0.1
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
 	github.com/prometheus/client_golang v1.11.0
-	golang.org/x/sync v0.4.0
+	golang.org/x/sync v0.7.0
 	google.golang.org/grpc v1.58.3
 	google.golang.org/protobuf v1.31.0
 )