Motivation:

The nightly CI checks for Integration Tests started failing since run https://github.com/apple/swift-nio-http2/actions/runs/19310336168/job/55228659542 (on 12 November 2025).

The reason for the failures is due to the `test_client_server_h1_request_response` requiring 282,000 allocations, exceeding the threshold boundary which is currently set to 280,050 across all versions.

The date the allocations started to exceed the boundary coincides with [release 2.89.0 of swift-nio](https://github.com/apple/swift-nio/releases/tag/2.89.0). In particular, that test uses `EmbeddedChannel`, and `EmbeddedChannel` was changed in [a PR contained in that release](apple/swift-nio#3442), that introduced some changes leading to greater allocations.

[Another change to `EmbeddedChannel`](apple/swift-nio#3495) in `swift-nio`'s latest release ([2.94.0](https://github.com/apple/swift-nio/releases)) has increased the number of allocations of the `client_server_h1_request_response` test to 284,000.

We should update the allocation thresholds for that test accordingly.

Modifications:

Updated the allocation threshold for `client_server_h1_request_response` to 284,000 across all versions.

Result:

Integration tests should no longer fail.

Motivation:

The nightly CI checks for Integration Tests started failing since run
https://github.com/apple/swift-nio-http2/actions/runs/19310336168/job/55228659542
(on 12 November 2025) due to multiple allocation benchmark tests
exceeding their allocation thresholds.

The date these failures started coincides with [release 2.89.0 of
`swift-nio`](https://github.com/apple/swift-nio/releases/tag/2.89.0). In
particular, all failing allocation benchmarks use `EmbeddedChannel`, and
`EmbeddedChannel` was changed in [a PR contained in that
release](apple/swift-nio#3442) that introduced
some changes leading to greater allocations.

[Another change to
`EmbeddedChannel`](apple/swift-nio#3495) in
`swift-nio`'s latest release
([2.94.0](https://github.com/apple/swift-nio/releases)) has also
increased the number of allocations in benchmarks using
`EmbeddedChannel`.

As such, we should update the allocation thresholds for affected tests
accordingly.

Modifications:

Updated the allocation threshold for all affected tests across all
versions.

Result:

Integration tests should no longer fail.