fix(worker): Bump taskbroker-client to 0.20.26

[evanh]

0.20.26 sends the broker hostname alone as the :authority instead of host:port, which is what the Cloud Service Mesh route matches on (getsentry/taskbroker#795). The s4s2 task-launchpad-push-worker pool can't be routed through envoy until launchpad is on it — getsentry/ops#23716 does that for getsentry, which is already on 0.20.26, and deliberately leaves launchpad out.

BatchPushTaskWorker folded into PushTaskWorker when batching became the default in getsentry/taskbroker#751, so src/launchpad/worker/config.py moves to PushTaskWorker and drops update_in_batches=True. Every other kwarg at that call site is still supported.

The lock also moves sentry-arroyo 2.39.2 → 2.44.1, sentry-sdk 2.61.1 → 2.70.0, msgpack 1.1.2 → 1.2.2 and adds prometheus-client, all forced by 0.20.26's own floors.

[evanh]

$ uv run pytest tests -q --ignore=tests/e2e --ignore=tests/integration
3 failed, 369 passed in 39.39s

$ uv run pytest tests/unit/test_worker_config.py -q
9 passed

The three are pre-existing on main — test_universal_apk, test_get_apksigner_certs and test_aggregate_symbols_mixed_modules fail identically with the diff stashed and 0.20.6 reinstalled (they want android/swift tooling that isn't on this machine).

Collection failed before the config.py change with ImportError: cannot import name 'BatchPushTaskWorker', which is how the rename surfaced.

$ uv run python -c "import importlib.metadata as m; print(m.version('taskbroker-client'))"
0.20.26
$ uv lock --check
Resolved 138 packages

Heads up on a likely conflict: your local evanh/fix/cleanup-args branch deletes src/launchpad/worker/config.py, which is the file this PR edits. Whichever lands second will need a hand.

[sentry]

📲 Install Builds

iOS

🔗 App Name	App ID	Version	Configuration
HackerNews	com.emergetools.hackernews	3.8 (1)	Release

Android

🔗 App Name	App ID	Version	Configuration
Hacker News	com.emergetools.hackernews	1.0.2 (13)	Release

⚙️ launchpad-test-android Build Distribution Settings

[sentry]

Size Analysis

2 components analyzed

iOS Builds

Name	Configuration	Version	Download Size	Install Size
HackerNews (iOS) com.emergetools.hackernews	Release	3.8 (1)	6.5 MB (N/A)	9.7 MB (N/A)

Android Builds

Name	Configuration	Version	Download Size	Uncompressed Size
Hacker News (Android) com.emergetools.hackernews	Release	1.0.2 (13)	2.9 MB (N/A)	6.6 MB (N/A)

Configure launchpad-test-ios status check rules