Update Project.toml

Change and upgrade to 2.2.0

Author: filipebraida

Project.toml

@@ -3,7 +3,7 @@ uuid = "f4b1acfe-f311-436c-bb79-8483f53c17d5"
 keywords = ["Partial Least Squares", "machine learning", "artificial intelligence", "Regression", "Multivariate Statistics", "Statistics"]
 license = "MIT"
 desc = "A Partial Least Squares Regressor package. Contains PLS1, PLS2 and Kernel PLS2 NIPALS algorithms. Can be used mainly for regression."
-version = "2.1.0"
+version = "2.2.0"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"