setup: remove msgpack version dependency

DifferentialOrange · DifferentialOrange · commit 897275e2facf · 2022-10-28T17:48:30.000+03:00
The only reason of this dependency is various vulnerability fixes. We decided not to enforce the user on this. Follows #223, part of #198
diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,3 @@
-msgpack>=1.0.4
+msgpack
 pandas
 pytz

-Original file line number
+Diff line change
 -msgpack>=1.0.4
 +msgpack
 pandas
 pytz