Update speechmatics-python requirement from ~=4.0.0 to ~=5.0.0

[dependabot]

Updates the requirements on speechmatics-python to permit the latest version.

Release notes

Sourced from speechmatics-python's releases.

5.0.0

Changed

• speechmatics-python has been deprecated in favour of speechmatics-rt for real-time transcription and speechmatics-batch for batch transcription.

• Moved channel field in AddTranscript message to the root of the message.

Changelog

Sourced from speechmatics-python's changelog.

[5.0.0] - 2025-08-14

• Moved channel field to root of AddTranscript message for multichannel transcription.

[4.0.9] - 2025-07-03

• Deprecating speechmatics-python in favor of speechmatics-rt for real-time transcription and 'speechmatics-batch' for batch transcription.

[4.0.8] - 2025-07-03

• Patch WebsocketClient to work with any websockets version >= 10.0

[4.0.7] - 2025-06-19

• Support requesting a temporary token (JWT) with region and client ref

[4.0.6] - 2025-06-19

• Moved channel_diarization_labels field from realtime transcription config to common class.

[4.0.5] - 2025-06-18

• Added missing flag to call_middleware for multichannel mode.

[4.0.4] - 2025-06-09

• Fixed non-multichannel sessions bugging out after adding multichannel support

[4.0.3] - 2025-06-06

• Fixed microphone transcription tests not working after adding multichan dz support

[4.0.2] - 2025-06-04

Fixed

• Fixed version number not matching release, incremented new version number for hotfix.

[4.0.1] - 2025-04-30

Added

• Support RT Multichannel and channel DZ

[4.0.0] - 2025-05-20

Changed

BREAKING CHANGE: Metrics functionality now requires explicit installation

... (truncated)

Commits

• a4be58f Update changelog and version for multichannel. (#139)
• 04cca7a Move channel field into root of AddTranscript (#138)
• cef0468 Bump version from 4.0.8 to 4.0.9 (#137)
• a9f4732 Add deprecation warning (#131)
• 3533e27 Patch WebsocketClient to work with any websockets version >= 10.0 (#136)
• 6b7acc8 Support requesting a temporary token (JWT) with region and client ref (#133)
• 1830e6e Unpin flask and flask-cors version in notification example (#132)
• 1c8b15f Fix channel_diarization label in wrong class (#135)
• 2a948d4 Patch missing is_binary flag for multichannel mode (#134)
• 9a2795a Fix non-multichannel sessions mixing up positional args (#129)
• Additional commits viewable in compare view

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