version bump: 0.4.2-sub2.0.0-alpha.6

Author: Christian Langenbacher

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "substrate-api-client"
-version = "0.4.1"
+version = "0.4.2-sub2.0.0-alpha.6"
 authors = ["Supercomputing Systems AG <[email protected]>"]
 edition = "2018"