Spec drift 2026-06-01: openapi 3.19.0 → 3.20.0

[github-actions]

Spec drift detected

Upstream specs changed since the last sync. This workflow runs with
contents: read only — it does NOT push a branch or open a PR.

To resolve: locally run uv run python scripts/sync_spec.py +
uv run python scripts/generate.py, audit the diff (including
kalshi/_generated/models.py), and open a PR whose body contains
Closes #<this issue number> so this issue auto-closes on merge.

• OpenAPI changed: true
• AsyncAPI changed: true
• Workflow run: https://github.com/TexasCoding/kalshi-python-sdk/actions/runs/26741648980

Spec checksums (sha256 of fetched upstream content)

• specs/openapi.yaml: a37111b9ea0dd3454a579899499f33028566cc93998dc4c10e96e5573b02a01a
• specs/asyncapi.yaml: 2f72d0a3fd25fe331210ed300f03ad4c1fedcb561b3ab425046b2dca6f4683ec

Reproduce locally and verify the same hashes before generating models.

OpenAPI

• Version: 3.19.0 → 3.20.0
• Endpoints: 85 → 86 paths

Added endpoints

/events/fee_changes

Removed endpoints

(none)

AsyncAPI

• Channels: 13 → 13

Added channels

(none)

Removed channels

(none)