Update CONTRIBUTING.md with PyPi release steps

CONTRIBUTING.md

@@ -25,7 +25,24 @@ If manual intervention is required, please follow the instructions provided by t
   - Include a description of your changes and reference the relevant issue.
   - Ensure your code follows the project’s style and passes all tests.
   - A maintainer will review your PR and may suggest changes.
+#### Releasing a new version on PyPi
 
+1. Create a branch for a release
+2. Set the version in pyaml/__init__.py:
+
+```
+__title__ = "pyAML"
+__description__ = "Python Accelerator Middle Layer"
+__url__ = "https://github.com/python-accelerator-middle-layer/pyaml"
+__version__ = "0.2.4"
+__author__ = "pyAML collaboration"
+__author_email__ = ""
+```
+3. Provide a list of changes and release description in the merge request. Justify a version bump is necessary.
+4. Approve and merge the PR
+
+5. Then tag to the corresponding version.
+6. CI/CD will take care of PyPi release. (Make sure the version in CI/CD deployment pipeline matches the one you just tagged.)
 ### 4. Documentation
 - **Improving Docs:** Fix typos, clarify instructions, or add missing documentation. Submit a PR as you would for code changes.
 - **Website:** Our project website is at [python-accelerator-middle-layer.github.io](https://python-accelerator-middle-layer.github.io/).