The monorepo-to-SDK copy script renames the package path from
`exabel_data_sdk/` to `exabel/`, which shortens path literals inside
tests by ~9 characters. Several lines that were split across implicit
string concatenations in the monorepo (over 100 chars) now fit on a
single line in the SDK and need to be rejoined to pass the ruff
formatter check.

Bumping ruff to match the monorepo side is a separate cleanup.

Pin ruff to the same version the monorepo uses so that code the
monorepo formatter and linter consider clean is also clean here.
Pinning also bounds future drift: new ruff rules don't silently
block an SDK release.

Add PLC0207 (missing-maxsplit-arg) to the ignore list to match the
monorepo; several call sites use .split("/")[-1] intentionally.

With PLC0207 added to the ignore list, ruff 0.15.11 passes both
check and format. Keep ruff unpinned and rely on the ignore list
to absorb new rules mirrored from the monorepo.

Monorepo regenerated protobuf stubs with grpcio-tools >=1.78.0,
so the copied stubs require grpcio >=1.78.0 at runtime. The locked
grpcio 1.76.0 in this repo caused pytest collection to fail.

The copied protobuf stubs hard-code GRPC_GENERATED_VERSION = '1.78.0'
and raise at import time if the installed grpcio is older. Pinning a
floor in the runtime dependency means external `pip install exabel`
users get a compatible grpcio automatically.

Constrain both to the current major (`grpcio>=1.78.0,<2`,
`protobuf>=6,<7`) so external installs don't silently resolve to
a future major with breaking changes.