bumping beta version to 5.0.0b3 (#2743)

Author: chayim

setup.py

@@ -8,7 +8,7 @@
     long_description_content_type="text/markdown",
     keywords=["Redis", "key-value store", "database"],
     license="MIT",
-    version="5.0.0b2",
+    version="5.0.0b3",
     packages=find_packages(
         include=[
             "redis",