Change version to 1.56.0 (#6344)

dfawley · arvindbr8 · web-flow · commit 2b6ff72f083d · 2023-06-15T14:30:56.000-05:00
Co-authored-by: Arvind Bright &lt;arvind.bright100@gmail.com&gt;
diff --git a/version.go b/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.56.0-dev"
+const Version = "1.56.0"
