Change version to 1.48.0 (#5482)

dfawley · web-flow · commit 64174955202f · 2022-07-12T14:28:10.000-07:00
[skip ci] Skipping Travis. Version number change only
diff --git a/version.go b/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.48.0-dev"
+const Version = "1.48.0"
