Pin BoTorch version to 0.9.5 (#2065)

Summary:
In preparation for the next release.

Pull Request resolved: #2065

Reviewed By: dme65, saitcakmak

Differential Revision: D52004639

Pulled By: Balandat

fbshipit-source-id: 5c1803744c0649b360dce8264430931f3cee00e0

setup.py

@@ -9,7 +9,7 @@
 from setuptools import find_packages, setup
 
 # TODO: read pinned Botorch version from a shared source
-PINNED_BOTORCH_VERSION = "0.9.4"
+PINNED_BOTORCH_VERSION = "0.9.5"
 
 if os.environ.get("ALLOW_BOTORCH_LATEST"):
     # allows a more recent previously installed version of botorch to remain