build(deps-dev): bump ex_doc from 0.40.3 to 0.40.4 in the dev-dependencies group

[dependabot]

Bumps the dev-dependencies group with 1 update: ex_doc.

Updates ex_doc from 0.40.3 to 0.40.4

Changelog

Sourced from ex_doc's changelog.

v0.40.4 (2026-09-03)

• Enhancements

  • Add :api_reference_noindex option to keep search engines from indexing api-reference.html
  • Generate reproducible HTML and EPUB output
  • Link HexDocs packages through their per-package subdomains

• Bug fixes

  • Preserve in-page anchors during Swup navigation and fully reload navigation between ExDoc builds
  • Format Elixir specs consistently regardless of their source line numbers
  • Autolink the Erlang/OTP 29 built-in record/0 type
  • Fix focus outline positioning for top-content heading action icons

Commits

• 80270f3 Release v0.40.4
• 934cf54 Reference to missing section (#2264)
• b5679af Add license information for remixicon font (#2263)
• 850f709 Bump brace-expansion from 1.1.12 to 1.1.18 in /assets (#2261)
• 873e03e Bump postcss from 8.5.15 to 8.5.26 in /assets (#2259)
• 27660d3 Bump js-yaml from 4.2.0 to 4.3.1 in /assets (#2260)
• ffec214 Bump postcss from 8.5.6 to 8.5.15 in /assets (#2241)
• 23cbd23 epub: Honor SOURCE_DATE_EPOCH for dcterms:modified and dc:identifier (#2256)
• a37128a Use a fixed makeup group_prefix for reproducible HTML output (#2255)
• 01f4763 Update earmark_parser dependency version -> 1.4.46 (#2254)
• Additional commits viewable in compare view

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[github-actions]

TCK 1.0-dev Compatibility Results (experimental)

This run is informational — failures do not block CI.

             A2A TCK Compatibility Report              
═══════════════════════════════════════════════════════
SUT: http://localhost:9999
Timestamp: 2026-09-08T19:34:44.695106+00:00

OVERALL COMPATIBILITY: 71.6%

┌─────────────┬────────┬────────┬─────────┬───────┐
│ Level       │ Passed │ Failed │ Skipped │ Total │
├─────────────┼────────┼────────┼─────────┼───────┤
│ MUST        │     44 │     35 │      35 │   114 │
│ SHOULD      │      2 │      9 │       0 │    11 │
│ MAY         │      2 │      2 │       0 │     4 │
└─────────────┴────────┴────────┴─────────┴───────┘

BY TRANSPORT:
  agent_card:    8/10 ⚠
  grpc:          0/72 (72 skipped) ✓
  jsonrpc:       50/100 (30 skipped) ⚠
  http_json:     3/83 (80 skipped) ✓

FAILED REQUIREMENTS:
  ✗ CARD-CACHE-002 (agent_card): Agent Card response should include an ETag header
  ✗ CARD-CACHE-003 (agent_card): Agent Card response may include a Last-Modified header
  ✗ DM-ART-001 (): Response contains no artifacts
  ✗ DM-MSG-001 (): Expected a Message response, but got a Task or no payload
  ✗ JSONRPC-SSE-002 (): Error code mismatch: expected ContentTypeNotSupportedError (-32005), got ParseError (-32700)
  ✗ JSONRPC-ERR-003 (): error.data is absent — A2A errors MUST include ErrorInfo in data array
  ✗ CORE-MULTI-004 (jsonrpc): Expected error code -32001 (TaskNotFoundError), got -32603
  ✗ CORE-HIST-001 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-HIST-002 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-HIST-003 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-HIST-004 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-HIST-005 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-HIST-006 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-GET-001 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_COMPLETED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-CANCEL-001 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-CANCEL-002 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_COMPLETED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-SEND-002 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_COMPLETED' but got 'TASK_STATE_WORKING'")
  ✗ CORE-MULTI-005 (jsonrpc): ('/home/runner/work/a2a-elixir/a2a-elixir/.tck-v1/tests/compatibility/_task_helpers.py', 98, "Skipped: Expected task state 'TASK_STATE_INPUT_REQUIRED' but got 'TASK_STATE_WORKING'")

[dependabot]

Looks like ex_doc is updatable in another way, so this is no longer needed.