Bump min botorch version (facebook#444)

Summary:
Pull Request resolved: facebook#444

To make the new contextual libraries happy, bump the botorch version (see failures in: https://fburl.com/kbkoen5s)

Reviewed By: lena-kashtelyan

Differential Revision: D25397593

fbshipit-source-id: c711ebb9d99477b5070d3758251d1d4a8b699b7a

setup.py

@@ -4,7 +4,7 @@
 from setuptools import find_packages, setup
 
 
-MIN_BOTORCH_VERSION = "0.3.2"
+MIN_BOTORCH_VERSION = "0.3.3"
 
 REQUIRES = [
     f"botorch>={MIN_BOTORCH_VERSION}",