chore(multiple samples) Update pytest dependencies to solve dependabot security alerts.

[XrossFox]

Description

This PR is an attempt at upgrading Pytest dependencies for all samples. Update from various older versions to Pytest 9.0.3. This is to solve about 381 dependabot security alerts.

Also took the liberty to update most noxfile_config.py files to run the most older and newest versions of python, 3.10 and 3.14. This is because Pytest 9.0.3 only supports Python 3.10 onwards, since previous python versions have already been discontinued by October 31 2025.

Also updated base noxfile-template to reflect this change.

Extra: fixed some dependencies that had ditched support for older python versions, and ran linter for some samples as part of nox test command.

Fixes b/511241844

Regarding failing pipelines:

I have reviewed pipelines and all remaining errors or failures are unrelated to Pytest updates, with one exception.

This is the list of failing samples, which will be fixed in a case by case basis independently at a later point.

• storage/samples/snippets - weird nox file (does not follow our implementation)
• people-and-planet-ai/image-classification
• storage/s3-sdk
• trace/cloud-trace-demo-app-opentelemetry/app
• translate/samples/snippets/hybrid_glossaries
• videointelligence/samples/analyze
• functions/v2/label_gce_instancefunctions/spanner
• functions/spanner
• discoveryengine
• cloud_tasks/http_queues
• batch

all appengine/ (most appengine samples are older and do not use nox)

• appengine/flexible/storage

• appengine/flexible/tasks

• asset/snippets/

• custom-credentials/aws/

• custom-credentials/okta

• cloud_tasks/http_queues

• cloud_tasks/snippets

• compute/client_library

• compute/oslogin

• dataflow/gemma/streaming

• dataflow/gpu-examples/pytorch-minimal

• gpu-examples/tensorflow-minimal

• dataflow/run-inference

• dataflow/snippets

• datalabeling/snippets [BREAKING CHANGE with Pytest 9.0.3]

-dataproc/snippets
-datastore/samples/snippets

• discoveryengine
• functions/slack
• functions/v2/label_gce_instance
• functions/v2/hello-datastore
• functions/v2/hello-firestore
• functions/v2/upper-firestore
• trace/cloud-trace-demo-app-opentelemetry/app
• translate/samples/snippets/hybrid_glossaries
• videointelligence/samples/analyze

-alloydb/notebooks
-automl/snippets
-blog/introduction_to_data_models_in_cloud_datastore
-contact-center-insights/snippets

• contentwarehouse/snippets

• dialogflow

• dlp/snippets

• document/ai

• iam/cloud-client/snippets

• genai/video_generation

• model_garden/anthropic

• monitoring/opencensus

• optimization/snippets

• people-and-planet-ai/weather-forecasting/tests/overview_tests

• pubsublite/spark-connector

• recaptcha_enterprise/snippets

• retail/interactive-tutorials/search

• securitycenter/snippets_management_api

• securitycenter/snippets_v2

• tpu

[gemini-code-assist]

Code Review

This pull request updates several dependencies, but the review identifies that the specified versions for pytest and google-cloud-storage do not exist on PyPI, which will cause installation failures. Additionally, the reviewer suggests splitting the PR to separate test and production dependency updates to follow the best practice of focusing on a single change per pull request.