Update the authors list

Author: IvanUkhov

Cargo.toml

@@ -3,7 +3,10 @@ name = "cblas-sys"
 version = "0.2.0"
 edition = "2021"
 license = "Apache-2.0 OR MIT"
-authors = ["Ivan Ukhov <ivan.ukhov@gmail.com>"]
+authors = [
+    "Ivan Ukhov <ivan.ukhov@gmail.com>",
+    "Severin Polonius <polonius.severin@gmail.com>",
+]
 description = "The package provides bindings to CBLAS (C)."
 documentation = "https://docs.rs/cblas-sys"
 homepage = "https://github.com/blas-lapack-rs/cblas-sys"