Fix create release step in github workflow. (#120)

.github/workflows/pypi_release.yml

@@ -33,7 +33,7 @@ jobs:
           password: ${{ secrets.PYPI_API_TOKEN }}
       - name: Set the Version
         run: |
-          grep_result=$(grep version pyrogram/__init__.py)
+          grep_result=$(grep -E '__version__ = ".*"' pyrogram/__init__.py)
           prefix="__version__ = \""
           suffix="\""
           final_value=${grep_result#"$prefix"}