build(deps-dev): update httpx2 requirement from >=2.13.0 to >=2.13.1

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Updates the requirements on httpx2 to permit the latest version.

Release notes

Sourced from httpx2's releases.

v2.13.1

Highlights

📤 Accurate file upload lengths

Passing a file as content= now calculates Content-Length from its remaining bytes, respecting the current file position (#1214).

🔐 Reliable proxy TLS and HTTP/2 negotiation

TLS hostname overrides now apply inside HTTP proxy tunnels without affecting the proxy's own TLS connection (#1223). HTTP/2 is advertised first when enabled, and HTTP/1.1 is omitted when disabled (#1155).

🧹 Clean WebSocket shutdown

The sync WebSocket keepalive thread now exits cleanly when a ping races with connection shutdown (#1228).

httpx2

Fixed

• Calculate Content-Length from the remaining bytes when a file is passed as content=, respecting its current position (#1214).
• Stop the sync WebSocket keepalive thread cleanly when a ping races with connection shutdown (#1228).

httpcore2

Fixed

• Honor the sni_hostname extension for TLS inside HTTP proxy tunnels without applying it to the proxy's TLS connection (#1223).
• Prefer HTTP/2 during TLS protocol negotiation when enabled, and stop advertising HTTP/1.1 when it is disabled (#1155).

Full Changelog: pydantic/httpx2@v2.13.0...v2.13.1

Changelog

Sourced from httpx2's changelog.

2.13.1 (September 23rd, 2026)

Fixed

• Calculate Content-Length from the remaining bytes when a file is passed as content=, respecting its current position. (#1214)
• Stop the sync WebSocket keepalive thread cleanly when a ping races with connection shutdown. (#1228)

2.13.0 (September 14th, 2026)

Changed

• Require brotlicffi 1.2.0.2 or later for the brotli extra on non-CPython implementations. (#1179)

Fixed

• Make the --no-verify CLI flag disable TLS certificate verification and add an explicit --verify counterpart. (#1140, #1186)
• Avoid nested async generator finalization errors when streamed responses are abandoned early. (#1204)

2.12.0 (August 18th, 2026)

Changed

• Use backports.zstd for Zstandard decoding on Python 3.13 and earlier. (#1146)

Fixed

• Bound peak memory while streaming compressed responses and close response streams when decoding fails. (#1126)

2.11.0 (August 18th, 2026)

Added

• Add the public Origin value object and URL.origin property for normalized, hashable origin comparisons. (#1134)

Changed

• Require Brotli 1.2.0 or later for the brotli extra. (#1141)

Fixed

• Restore deprecated status code aliases. (#1135)

... (truncated)

Commits

• d91c9f4 Correct the upcoming release version to 2.13.1 (#1228)
• 62a607d Prepare version 2.14.0 (#1227)
• df9783d Respect file cursor positions when calculating raw content length (#1214)
• 04d152b docs: correct stale URL.query example (#1222)
• See full diff in compare view

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