bump google.golang.org/grpc from v1.33.2 to v1.56.2

go.mod

@@ -1,12 +1,13 @@
 module go.opencensus.io
 
 require (
-	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
-	github.com/golang/protobuf v1.4.3
-	github.com/google/go-cmp v0.5.3
-	github.com/stretchr/testify v1.8.1
-	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b
-	google.golang.org/grpc v1.33.2
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
+	github.com/golang/protobuf v1.5.3
+	github.com/google/go-cmp v0.5.9
+	github.com/stretchr/testify v1.8.3
+	golang.org/x/net v0.12.0
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230725213213-b022f6e96895 // indirect
+	google.golang.org/grpc v1.56.2
 )
 
 go 1.13