bump to v1.9.4

bindings/python/google_benchmark/__init__.py

diff --git a/bindings/python/google_benchmark/__init__.py b/bindings/python/google_benchmark/__init__.py
index 93a4354..44a54f5 100644
--- a/bindings/python/google_benchmark/__init__.py
+++ b/bindings/python/google_benchmark/__init__.py
@@ -50,7 +50,7 @@
     oNSquared as oNSquared,
 )
 
-__version__ = "1.9.3"
+__version__ = "1.9.4"
 
 
 class __OptionMaker: