Change status to beta in pyproject.toml file (pytorch#7548)

Change status to beta in pyproject.toml file (pytorch#7520)

(cherry picked from commit 54f0786)

Co-authored-by: Mergen Nachin <[email protected]>

Author: pytorchbot

pyproject.toml

@@ -29,7 +29,7 @@ classifiers = [
     #   3 - Alpha
     #   4 - Beta
     #   5 - Production/Stable
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Intended Audience :: Education",
     "Intended Audience :: Science/Research",