update python speech sdk version to latest 1.43.0 version.

[BrianMouncer]

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[learn-build-service-prod]

Learn Build status updates of commit 2469c1c:

✅ Validation status: passed

File	Status	Preview URL	Details
ci-configs/packages-latest.json	✅Succeeded
metadata/latest/azure-cognitiveservices-speech.json	✅Succeeded

For more details, please refer to the build report.

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[learn-build-service-prod]

Learn Build status updates of commit d1cc007:

✅ Validation status: passed

File	Status	Preview URL	Details
ci-configs/packages-latest.json	✅Succeeded
metadata/latest/azure-cognitiveservices-speech.json	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit b3bd15a:

✅ Validation status: passed

File	Status	Preview URL	Details
metadata/latest/azure-cognitiveservices-speech.json	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel