feat: Compress requests using brotli algo

[mixalturek]

• Update apify-client dependency to use brotli extra.
• Introduced in feat: Add request body compression with optional brotli apify-client-python#927.

Related PRs

• https://github.com/apify/apify-core/pull/28971
• feat: Document support for brotli compression apify-docs#2750
• feat: Compress requests using brotli algo apify-client-js#962
• feat: Add request body compression with optional brotli apify-client-python#927
• feat: Compress requests using brotli algo #1031

TODO/blocked:

What to do once PR #927 merges and apify-client releases:
1. Check which version introduced the extra (likely 3.1.0 or 3.0.5)
2. Optionally bump the floor in pyproject.toml: apify-client[brotli]>=3.1.0 in the extra dep, or tighten the main apify-client>=3.0.0 to that version
3. Run uv sync --all-extras — the warning will disappear and brotli's transitive deps will be locked
4. Commit both files

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.75%. Comparing base (6958c61) to head (30e5c46).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1031   +/-   ##
=======================================
  Coverage   91.75%   91.75%           
=======================================
  Files          50       50           
  Lines        3215     3215           
=======================================
  Hits         2950     2950           
  Misses        265      265           

Flag	Coverage Δ
e2e	35.64% <ø> (ø)
integration	57.38% <ø> (ø)
unit	83.07% <ø> (ø)

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