Bump h2 from 4.1.0 to 4.3.0 in /src/test/regress

[dependabot[bot]]

Bumps h2 from 4.1.0 to 4.3.0.

Changelog

Sourced from h2's changelog.

4.3.0 (2025-08-23)

API Changes (Backward Incompatible)

• Reject header names and values containing illegal characters, based on RFC 9113, section 8.2.1. The main Python API is compatible, but some previously valid requests/response headers might now be blocked. Use the validate_inbound_headers config option if needed. Thanks to Sebastiano Sartor (sebsrt) for the report.

API Changes (Backward Compatible)

• h2 events now have tighter type bounds, e.g. stream_id is guaranteed to not be None for most events now. This simplifies downstream type checking.
• Various typing-related improvements.

Bugfixes

• Fix error value when opening a new stream on too many open streams.

4.2.0 (2025-02-01)

API Changes (Backward Incompatible)

• Support for Python 3.6 has been removed.
• Support for Python 3.7 has been removed.
• Support for Python 3.8 has been removed.
• Remove mistakenly set max_inbound_frame_size attribute on H2Stream.

API Changes (Backward Compatible)

• Support for Python 3.11 has been added.
• Support for Python 3.12 has been added.
• Support for Python 3.13 has been added.
• Add an ability to send outbound cookies separately to improve headers compression.
• Updated packaging and testing infrastructure.

Bugfixes

• Fix repr() checks for Python 3.11
• Fix asyncio / wsgi examples.
• Clarify docs on using curl with http2.

Commits

• 1aae569 v4.3.0
• 9e4bbed merge surrounding whitespace and uppercase validators into illegal character ...
• 035e989 be stricter about which characters to accept for headers
• 883ed37 reject header names and values containing unpermitted characters \r, \n, ...
• 0583911 lint: fix TC006
• bbd3d90 fix(packaging): bump twine to pass meta check wildcard bugs
• ea3140f cleanup
• 9ce83ff exclude RDT from sdist
• 492d3db Update .readthedocs.yaml
• 243461d Create RTD config
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 83.33%. Comparing base (8bb8b2c) to head (012abdb).

:x: Your project check has failed because the head coverage (83.33%) is below the target coverage (87.50%). You can increase the head coverage or adjust the target coverage.

:exclamation: There is a different number of reports uploaded between BASE (8bb8b2c) and HEAD (012abdb). Click for more details.

HEAD has 62 uploads less than BASE

Flag	BASE (8bb8b2c)	HEAD (012abdb)
17_regress_check-pytest	1	0
16_regress_check-pytest	1	0
15_regress_check-pytest	1	0
16_regress_check-follower-cluster	1	0
17_regress_check-columnar-isolation	1	0
15_regress_check-columnar-isolation	1	0
16_regress_check-columnar-isolation	1	0
15_regress_check-follower-cluster	1	0
17_regress_check-follower-cluster	1	0
15_17_upgrade	1	0
16_17_upgrade	1	0
17_regress_check-add-backup-node	1	0
16_regress_check-split	1	0
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15_regress_check-columnar	1	0
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17_regress_check-enterprise-failure	1	0
15_regress_check-enterprise-failure	1	0
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16_regress_check-enterprise-failure	1	0
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15_regress_check-vanilla	1	0
15_regress_check-query-generator	1	0
17_regress_check-vanilla	1	0
16_regress_check-enterprise	1	0
17_regress_check-enterprise	1	0
15_regress_check-enterprise	1	0
17_regress_check-enterprise-isolation	1	0
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17_regress_check-enterprise-isolation-logicalrep-1	1	0
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15_arbitrary_configs_2	1	0
17_arbitrary_configs_2	1	0
15_regress_check-operations	1	0
17_regress_check-operations	1	0
16_regress_check-operations	1	0
15_regress_check-isolation	1	0
16_regress_check-isolation	1	0
15_arbitrary_configs_4	1	0
17_arbitrary_configs_4	1	0
17_regress_check-isolation	1	0
16_arbitrary_configs_4	1	0
17_arbitrary_configs_0	1	0
15_arbitrary_configs_0	1	0
15_arbitrary_configs_3	1	0
16_arbitrary_configs_5	1	0
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15_arbitrary_configs_1	1	0
16_arbitrary_configs_1	1	0
17_arbitrary_configs_1	1	0
16_arbitrary_configs_3	1	0

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8192      +/-   ##
==========================================
- Coverage   88.79%   83.33%   -5.47%     
==========================================
  Files         287      287              
  Lines       63113    62921     -192     
  Branches     7937     7892      -45     
==========================================
- Hits        56044    52435    -3609     
- Misses       4766     7881    +3115     
- Partials     2303     2605     +302     

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