fix: require Python 3.10+

[parthea]

chore: enable generation / release for bigtable

Fixes b/510022189, b/507893758, b/507889482, b/503326310

[gemini-code-assist]

Code Review

This pull request updates the google-cloud-bigtable library, bumping the minimum supported Python version to 3.10 and updating core dependencies. It introduces internal session-related types, adds an Edition field to the Instance type, and enhances AutomatedBackupPolicy with location-based settings. The PR also includes significant cleanup of repository metadata, fixes to asynchronous sample code, and updates to the documentation and copyright headers. I have no feedback to provide.

[chalmerlowe]

This file has a lingering reference to 3.8 that is unnecessary:

google-cloud-python/packages/google-cloud-bigtable/google/cloud/bigtable/data/_cross_sync/cross_sync.py

Line 205 in b85ff03

if task_name and sys.version_info >= (3, 8):

Other than that, this looks very clean of all references to 3.7, 3.8, 3.9. Lingering references appear to be standard boilerplate that should be there.

[chalmerlowe]

I would like to request that one last unnecessary reference to version 3.8 be removed.

Other than that, approved.

[parthea]

New failures

FAILED tests/unit/data/_async/test_client.py::TestBigtableDataClientAsync::test__start_background_channel_refresh_sync - RuntimeError: There is no current event loop in thread 'MainThread'.
FAILED tests/unit/data/_async/test_client.py::TestBigtableDataClientAsync::test_client_ctor_sync - Failed: DID NOT WARN. No warnings of type (<class 'RuntimeWarning'>,) were emitted.