IGNITE-27373 DB API Driver 3: Add tests with GIL disabled

[isapego]

https://issues.apache.org/jira/browse/IGNITE-27373

Runs of new tests: https://ci.ignite.apache.org/buildConfiguration/DevApacheIgnite3x_Platforms_Ignite27373dbapiUpgradeApacheIgnite3x_Test_PlatformTests_RunPythonTests/10128617?buildTab=dependencies&type=snapshot&mode=list

[Copilot]

Pull request overview

Adds CI coverage and stress tests for the Python DB-API driver under Python 3.14’s free-threaded (GIL-disabled) mode, and updates infrastructure/configuration to run those scenarios.

Changes:

• Extend tox/TeamCity configuration to run an additional py314t (no-GIL) test environment.
• Add a new concurrency-focused pytest suite for the DB-API driver and adjust test fixtures for better isolation.
• Update DB-API threadsafety level and refresh Python test dependencies.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
modules/platforms/python/dbapi/tox.ini	Adds py314t tox env and GIL-disabled precheck.
modules/platforms/python/dbapi/tests/test_concurrency.py	New concurrency test suite intended to validate thread-safety (incl. no-GIL runs).
modules/platforms/python/dbapi/tests/conftest.py	Makes generated table names unique per test invocation.
modules/platforms/python/dbapi/requirements/tests.txt	Updates pytest/teamcity-messages versions; removes some older test deps.
modules/platforms/python/dbapi/requirements/install.txt	Removes runtime dependency list (now empty).
modules/platforms/python/dbapi/pyignite_dbapi/init.py	Updates DB-API threadsafety value.
.teamcity/test/platform_tests/python_tests/PythonDbApiToxTest.kt	Refactors Python DB-API tox build type and adds pyenv update step.
.teamcity/test/platform_tests/python_tests/Project.kt	New TeamCity subproject for Python test build configurations (incl. no-GIL).
.teamcity/test/platform_tests/RunPythonTests.kt	New composite build to run all Python test configurations.
.teamcity/test/platform_tests/Project.kt	Wires the new Python subproject/composite into Platform Tests.
.teamcity/test/build_types/RunPlatformTests.kt	Updates platform composite to depend on the new Python composite build.

Comments suppressed due to low confidence (1)

.teamcity/test/platform_tests/python_tests/PythonDbApiToxTest.kt:45

• The build step runs git pull inside the agent's pyenv checkout, making builds non-reproducible and potentially breaking at any time due to upstream changes. Prefer pinning pyenv/definitions to a known revision (or baking the needed Python versions into the agent image) instead of updating at build time.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.