Downsizing sample for some language in speech to text

[SebSchwartz]

Issue #, if available: #7808

Description of changes:

If language is one of (fr-FR, en-AU, en-GB and fr-CA), downsize the sample to 8kHz and change url to transcribe.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #7835 (18e84d5) into main (7b478a5) will increase coverage by 0.24%.
The diff coverage is 86.66%.

@@            Coverage Diff             @@
##             main    #7835      +/-   ##
==========================================
+ Coverage   75.41%   75.66%   +0.24%     
==========================================
  Files         215      215              
  Lines       13544    13550       +6     
  Branches     2671     2674       +3     
==========================================
+ Hits        10214    10252      +38     
+ Misses       3127     3095      -32     
  Partials      203      203              

Impacted Files	Coverage Δ
...rc/Providers/AmazonAIConvertPredictionsProvider.ts	79.78% <86.66%> (+18.76%)	⬆️

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[wlee221]

@SebSchwartz, thanks a lot for this PR and even writing a missed unit test! Got one problem with downsampling that we want to address, but the rest LGTM 👍

[SebSchwartz]

@wlee221 I've changed according to your comments ;)

[wlee221]

This LGTM, thanks a lot for your contribution! Have you tried this change on your app?

[wlee221]

Since the fix is straightforward and unit test has been included, I'll go ahead and merge this. Will do simple manual testing after this hits unstable.

[codecov-commenter]

Codecov Report

Merging #7835 (a89cfee) into main (c48ad83) will increase coverage by 0.21%.
The diff coverage is 88.23%.

@@            Coverage Diff             @@
##             main    #7835      +/-   ##
==========================================
+ Coverage   77.65%   77.87%   +0.21%     
==========================================
  Files         236      236              
  Lines       16505    16513       +8     
  Branches     3535     3539       +4     
==========================================
+ Hits        12817    12859      +42     
+ Misses       3577     3543      -34     
  Partials      111      111              

Impacted Files	Coverage Δ
...rc/Providers/AmazonAIConvertPredictionsProvider.ts	83.15% <88.23%> (+18.32%)	⬆️
...kages/amazon-cognito-identity-js/src/BigInteger.js	89.71% <0.00%> (+0.40%)	⬆️

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[github-actions]

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