Relax botocore dependency specification

[claude]

Description of Change

This PR relaxes the botocore dependency to support version 1.42.72.

Type: Relax (patch)
Botocore diff: boto/botocore@1.42.70...1.42.72

What changed in botocore

• botocore/__init__.py: version string bump only (1.42.70 → 1.42.72)
• botocore/handlers.py: new remove_polly_start_speech_synthesis_stream function added to BUILTIN_HANDLERS — removes an operation that requires HTTP/2 (unsupported in Python); pure sync class-attribute manipulation, no I/O, no async override needed
• All other changes: JSON schema/model updates for batch, bedrock-agentcore, ec2, mediaconvert, observabilityadmin, polly, and endpoints.json — no code changes

What changed in aiobotocore

Version bounds updated only, no code changes.

• pyproject.toml: botocore >= 1.42.62, < 1.42.71 → botocore >= 1.42.62, < 1.42.73
• aiobotocore/__init__.py: 3.3.0 → 3.3.1
• CHANGES.rst: added changelog entry
• uv.lock: updated

Reviewer checklist

Please verify before approving:

• Botocore diff reviewed — changes correctly categorized as relax vs bump
• test_patches.py hashes are up to date
• Version bump in __init__.py is correct (patch for relax, minor for bump)
• CHANGES.rst entry added
• No unrelated changes included

How to help

• Review the botocore diff link above
• Check aiobotocore changes match botocore
• If something looks wrong, leave a review comment — the bot will attempt to fix straightforward issues automatically
• Use @claude to ask questions or request modifications
• Approve and merge when satisfied

Checklist

• Followed CONTRIBUTING.rst
• Updated test_patches.py
• Botocore diff: boto/botocore@1.42.70...1.42.72

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.32%. Comparing base (bfce8d4) to head (cdc8519).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1521   +/-   ##
=======================================
  Coverage   93.32%   93.32%           
=======================================
  Files          76       76           
  Lines        8162     8162           
=======================================
  Hits         7617     7617           
  Misses        545      545           

Flag	Coverage Δ
no-httpx	90.14% <ø> (ø)
os-ubuntu-24.04	93.32% <ø> (ø)
os-ubuntu-24.04-arm	91.35% <ø> (ø)
python-3.10	91.30% <ø> (ø)
python-3.11	91.30% <ø> (ø)
python-3.12	91.30% <ø> (ø)
python-3.13	91.30% <ø> (ø)
python-3.14	93.28% <ø> (ø)
python-3.9	91.32% <ø> (ø)
unittests	93.32% <ø> (ø)
with-awscrt	92.95% <ø> (ø)

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[thehesiod]

ok @jakob-keller ready for your review

[jakob-keller]

Please update the botocore and boto3 dependencies

[thehesiod]

@jakob-keller you need to (@) at claude. Also for stuff like this have it update the prompt so it does this correctly in the future. I'll have it investigate this in #1523

[claude]

Botocore 1.42.73 is available but requires code changes. Upgrade is blocked on this PR.

Botocore diff (1.42.72 → 1.42.73): boto/botocore@1.42.72...1.42.73

What changed:

• botocore/handlers.py: Added remove_polly_start_speech_synthesis_stream (sync-only, no async override needed)
• botocore/httpchecksum.py: Bug fix in _apply_request_trailer_checksum — aiobotocore overrides this function and needs the same fix

The _apply_request_trailer_checksum fix in botocore allows non-seekable bodies to still get X-Amz-Decoded-Content-Length set if the caller pre-set Content-Length, and unconditionally removes Content-Length for chunked transfer (rather than only when content length is known). This same fix needs to be applied to aiobotocore/httpchecksum.py.

A bump PR (minor version) will be created once this PR is merged or closed.