Update pyproject.toml

Trying a new release of the python lib to see if there was a packaging error in the publication of rc1.

Author: daxpryce

pyproject.toml

@@ -11,7 +11,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "diskannpy"
-version = "0.5.0.rc1"
+version = "0.5.0.rc2"
 
 description = "DiskANN Python extension module"
 # readme = "../README.md"