chore(several samples) Updating all instances of Pytest up to version 9.0.3 Part III

[XrossFox]

Directories that start from E to M.

• Bump pytest to 9.0.3 (pinned to Python >= 3.10)
• Update noxfile configs to only test against Python 3.10 and 3.14
• Upgrade Dockerfile base images and Beam SDKs to Python 3.14 (Note, previously missed directories were modified too)

Description

Fixes b/516829625

Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[gemini-code-assist]

Code Review

This pull request upgrades the Python version to 3.14 across multiple Dockerfiles, updates test configurations in noxfile_config.py to ignore older Python versions, and bumps pytest dependencies. The review feedback highlights several critical issues where Python versions are mismatched within the Dockerfiles (such as conda environments or explicit Python installations still using 3.9 or 3.10 while copying the 3.14 Beam SDK). Additionally, several comments point out outdated inline documentation in the modified noxfile_config.py files that still reference older Python versions.

[XrossFox]

/gemini review

[gemini-code-assist]

Code Review

This pull request attempts to upgrade Python versions to 3.14, update Apache Beam to version 2.73.0 across multiple Dockerfiles, and update test requirements to use pytest 9.0.3. However, several critical issues were identified: Python 3.14 is currently an unstable pre-release without official stable Docker images, and Apache Beam version 2.73.0 does not exist, which will cause Docker build and pip installation failures. Additionally, a package incompatibility was found in the custom App Engine Dockerfile where python-pip (Python 2) is installed alongside Python 3. It is highly recommended to use stable Python (e.g., 3.11 or 3.12) and valid Apache Beam releases.

[XrossFox]

Code Review

This pull request attempts to upgrade Python versions to 3.14, update Apache Beam to version 2.73.0 across multiple Dockerfiles, and update test requirements to use pytest 9.0.3. However, several critical issues were identified: Python 3.14 is currently an unstable pre-release without official stable Docker images, and Apache Beam version 2.73.0 does not exist, which will cause Docker build and pip installation failures. Additionally, a package incompatibility was found in the custom App Engine Dockerfile where python-pip (Python 2) is installed alongside Python 3. It is highly recommended to use stable Python (e.g., 3.11 or 3.12) and valid Apache Beam releases.

Python 3.14 and Apache bean 2.73 have already been released and available on docker hub.

https://pypi.org/project/apache-beam/
https://hub.docker.com/_/python/tags?name=3.14
https://hub.docker.com/r/apache/beam_python3.14_sdk