[ColtonRobak]

Closes #2226

Raises the grpcio requirement from >=1.59.5,<1.80.0 to >=1.59.5,<2.0.0, the range used before #1682. Google Cloud's Python libraries will require grpcio>=1.83.0 from April 2027 (googleapis/google-cloud-python#18451), and the current cap makes weaviate-client uninstallable next to them after that.

CI now covers the new range: proto-test adds grpcio 1.85.0 and protobuf 6.33.6, and integration-tests adds a Python 3.14 / grpcio 1.85.0 entry. The integration job now pins grpcio and protobuf per entry instead of installing grpcio-tools and grpcio-health-checking, which only set protobuf indirectly: 1.84.0+ of both require protobuf 7, which protobuf<7.0.0 excludes, and the integration tests use neither (the client dropped them in #1788). Each existing entry keeps the protobuf major it had before (4.x, 5.x or 6.x), and the 3.10 entry moves from grpcio 1.59.0 to the 1.59.5 floor, since below the floor pip install . replaces it with the newest allowed grpcio, now 1.85.0.

Verification

Same source on Python 3.12 with protobuf 6.33.6, run under grpcio 1.78.0 and 1.85.0, with identical results:

• proto_test: 4 passed
• test: 564 passed, 1 skipped
• mock_tests (run serially): 71 passed
• Integration subset against Weaviate 1.39.13 (batch, batch delete, collection, filter, get, near_vector, hybrid, aggregate, iterator, tenants, async, vectors, groups, references, sorting; ci/docker-compose.yml only): 834 passed, 5 failed, 44 skipped, with no test changing outcome between the two runs. The 5 failures need the async-indexing (port 8090) and OIDC servers, which weren't running.
• This branch installs next to google-api-core[grpc]==2.43.0 and grpcio>=1.83.0 (resolves grpcio 1.85.0, grpcio-status 1.85.0, protobuf 6.33.6); 4.24.1 fails with ResolutionImpossible.

Note for reviewers

The generated *_pb2_grpc.py version check imports grpc._utilities.first_version_is_lower, a private grpcio helper. It's still in 1.85.0, and the new proto-test entry would catch its removal. If you'd rather keep a minor-version band, <1.90.0 covers this too; the CI entries are what keep the new range tested.

🤖 Generated with Claude Code

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.26%. Comparing base (635124c) to head (a5f9aab).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2227      +/-   ##
==========================================
+ Coverage   89.23%   89.26%   +0.02%     
==========================================
  Files         312      312              
  Lines       24715    24736      +21     
==========================================
+ Hits        22055    22081      +26     
+ Misses       2660     2655       -5     

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