Update version to 4.1.0 in preperation for release

Author: bzvestey

src/Saml2/version.json

@@ -1,6 +1,6 @@
 {
     "php-saml": {
-        "version": "4.0.1",
+        "version": "4.1.0",
         "released": "06/027/2022"
     }
 }