go.mod: bump go version to 1.19

Kulezi · Kulezi · commit b17b20589931 · 2022-09-13T10:22:19.000+02:00
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/scylladb/scylla-go-driver
 
-go 1.18
+go 1.19
 
 require (
 	github.com/google/go-cmp v0.5.6
