docs(releasing): simplify and update releasing guidelines

Signed-off-by: Yurii Serhiichuk <[email protected]>

Author: xSAVIKx

RELEASING.md

@@ -4,22 +4,15 @@ This repository is configured to automatically publish the corresponding [PyPI
 package](https://pypi.org/project/cloudevents/) and GitHub Tag via GitHub Actions.
 
 To release a new CloudEvents SDK, contributors should bump `__version__` in
-[cloudevents](cloudevents_v1/__init__.py) to reflect the new release version. On merge, the action
-will automatically build and release to PyPI using
-[this PyPI GitHub Action](https://github.com/pypa/gh-action-pypi-publish). This
-action gets called on all pushes to main (such as a version branch being merged
-into main), but only releases a new version when the version number has changed. Note,
-this action assumes pushes to main are version updates. Consequently,
-[pypi-release.yml](.github/workflows/pypi-release.yml) will fail if you attempt to
-push to main without updating `__version__` in
-[cloudevents](cloudevents_v1/__init__.py) so don't forget to do so.
+`src/cloudevents/__init__.py` to reflect the new release version. On merge, the action
+will automatically build and release to PyPI. This action gets called on all pushes to main
+(such as a version branch being merged into main), but only releases a new version when the
+version number has changed. Note, this action assumes pushes to main are version updates.
+Consequently, the release workflow will fail if you attempt to push to main without updating
+`__version__` in `src/cloudevents/__init__.py` so don't forget to do so.
 
-After a version update is merged, the script [pypi_packaging.py](pypi_packaging.py)
-will create a GitHub tag for the new cloudevents version using `__version__`.
-The script fails if `__version__` and the local pypi version for
-cloudevents are out of sync. For this reason, [pypi-release.yml](.github/workflows/pypi-release.yml)
-first must upload the new cloudevents pypi package, and then download the recently updated pypi
-cloudevents package for [pypi_packaging.py](pypi_packaging.py) not to fail.
+After a version update is merged, a GitHub tag for the new cloudevents version is created
+using `__version__`.
 
 View the GitHub workflow [pypi-release.yml](.github/workflows/pypi-release.yml) for
 more information.