chore(deps): bump aiobotocore from 2.25.1 to 3.9.1 - #527

Sourced from aiobotocore's releases.

3.9.1

• bump botocore dependency specification to support "botocore >= 1.43.66, < 1.43.76" (#1693, #1709)
• seed the amz-sdk-request header's max token on the initial request attempt (previously only appeared once a retry occurred) and honour a per-request read_timeout override when computing retry timing, matching botocore 1.43.66 and 1.43.72 (#1709)
• fix login credential refreshes calling botocore's sync-only create_o_auth2_token compatibility alias, which aiobotocore cannot resolve asynchronously, by calling the generated create_oauth2_token method directly (closes #1697) (#1704)
• fix a concurrency-safety issue in HTTPSession session management (closes #1695) (#1696)

3.9.0

• bump botocore dependency specification to support "botocore >= 1.43.3, < 1.43.57" (#1665, #1668, #1675)
• bump aiohttp dependency specification to support "aiohttp >= 3.14.0, < 4.0.0" (#1667)
• run the optional httpx backend on trio in addition to asyncio, via anyio primitives, so aiobotocore is usable from trio-based projects (closes #749) (#1667)
• prefer httpx2 — Pydantic's maintained, API-compatible fork of httpx — for the optional httpx backend, adding a new aiobotocore[httpx2] extra; the existing aiobotocore[httpx] extra keeps working but now installs the deprecated legacy httpx package and emits a DeprecationWarning when used (#1669)
• fix the release-drafting workflow silently reporting success when the agent never ran (#1664)

3.8.0

• bump botocore dependency specification to support "botocore >= 1.43.3, < 1.43.47" (#1605, #1606, #1635, #1651, #1655)
• port botocore 1.43.24's long-polling no-retry signal (handler_response is False) through the async retry path so retries don't block the event loop with a synchronous sleep during backoff (#1606)
• fix AIOHTTPSession/HttpxSession blocking the event loop on the first request per proxy: SSL context creation (certificate loading via load_verify_locations/load_cert_chain) now runs in a thread via asyncio.to_thread instead of directly on the loop (closes #1469) (#1587)
• restructure StreamingBody to subclass botocore.response.StreamingBody (dropping the wrapt.ObjectProxy wrapper) and add full httpx API parity — read(amt), readinto(), readlines(), async iteration, iter_lines()/iter_chunks(), tell(), close() — where read(amt) previously raised ValueError; note that AioStreamingBody.__aenter__ now returns self instead of the raw aiohttp ClientResponse (use .raw_stream for the underlying response) (closes #1365) (#1539)

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Sourced from aiobotocore's changelog.

3.9.1 (2026-08-20) ^^^^^^^^^^^^^^^^^^^

• bump botocore dependency specification to support "botocore >= 1.43.66, < 1.43.76" (#1693, #1709)
• seed the amz-sdk-request header's max token on the initial request attempt (previously only appeared once a retry occurred) and honour a per-request read_timeout override when computing retry timing, matching botocore 1.43.66 and 1.43.72 (#1709)
• fix login credential refreshes calling botocore's sync-only create_o_auth2_token compatibility alias, which aiobotocore cannot resolve asynchronously, by calling the generated create_oauth2_token method directly (closes #1697) (#1704)
• fix a concurrency-safety issue in HTTPSession session management (closes #1695) (#1696)

3.9.0 (2026-08-01) ^^^^^^^^^^^^^^^^^^

• bump botocore dependency specification to support "botocore >= 1.43.3, < 1.43.57" (#1665, #1668, #1675)
• bump aiohttp dependency specification to support "aiohttp >= 3.14.0, < 4.0.0" (#1667)
• run the optional httpx backend on trio in addition to asyncio, via anyio primitives, so aiobotocore is usable from trio-based projects (closes #749) (#1667)
• prefer httpx2 — Pydantic's maintained, API-compatible fork of httpx — for the optional httpx backend, adding a new aiobotocore[httpx2] extra; the existing aiobotocore[httpx] extra keeps working but now installs the deprecated legacy httpx package and emits a DeprecationWarning when used (#1669)
• fix the release-drafting workflow silently reporting success when the agent never ran (#1664)

3.8.0 (2026-07-17) ^^^^^^^^^^^^^^^^^^

• bump botocore dependency specification to support "botocore >= 1.43.3, < 1.43.47" (#1605, #1606, #1635, #1651, #1655)
• port botocore 1.43.24's long-polling no-retry signal (handler_response is False) through the async retry path so retries don't block the event loop with a synchronous sleep during backoff (#1606)
• fix AIOHTTPSession/HttpxSession blocking the event loop on the first request per proxy: SSL context creation (certificate loading via load_verify_locations/load_cert_chain) now runs in a thread via asyncio.to_thread instead of directly on the loop (closes #1469) (#1587)
• restructure StreamingBody to subclass botocore.response.StreamingBody (dropping the wrapt.ObjectProxy wrapper) and add full httpx API parity — read(amt), readinto(), readlines(), async iteration, iter_lines()/iter_chunks(), tell(), close() — where read(amt) previously raised ValueError; note that AioStreamingBody.__aenter__ now returns self instead of the raw

... (truncated)

• c92e345 Release v3.9.1 (#1710)
• 212c18f build(deps-dev): bump time-machine from 3.3.1 to 3.4.0 (#1718)
• ba76b51 build(deps): bump astral-sh/setup-uv from 9.0.0 to 10.0.1 (#1713)
• 1975e82 feat: support botocore 1.43.75 — seed max attempts and honour per-request rea...
• e7bc502 build(deps): bump httpx2 from 2.7.0 to 2.9.1 (#1701)
• 6bb1bc1 build(deps-dev): bump anthropic from 0.119.0 to 0.120.2 (#1702)
• 9409dc5 build(deps): bump anthropics/claude-code-action from 1.0.182 to 1.0.187 (#1706)
• bf5b5b2 build(deps-dev): bump time-machine from 3.2.0 to 3.3.1 (#1708)
• 267a823 build(deps-dev): bump packaging from 26.2 to 26.3 (#1707)
• d8e57fa fix: use generated SignIn OAuth method for login refresh (#1704)
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