Fix client ID and subscribed topics

[qqaatw]

Summary:

1. Fix client ID and subscribed topics to comply with the policy.
2. Update minimally supported Python version to 3.9.
3. Change formatter from black to ruff-format.
4. Remove unnecessary http requests.
5. Update awsiotsdk version to 1.20.0.

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (ad6083b) 92.28% compared to head (988cd86) 92.18%.

Files	Patch %	Lines
JciHitachi/aws_connection.py	80.00%	3 Missing ⚠️
JciHitachi/model.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #15      +/-   ##
==========================================
- Coverage   92.28%   92.18%   -0.11%     
==========================================
  Files           8        8              
  Lines         804      793      -11     
==========================================
- Hits          742      731      -11     
  Misses         62       62              

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