Handle more update scenarios

[raman325]

Proposed change

Handles updates like changing the PIN or calendar entity ID associated with a slot

fixes #63
fixes #59

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:

[codecov]

Codecov Report

Attention: Patch coverage is 96.15385% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 89.50%. Comparing base (aa8504e) to head (680facf).
Report is 1 commits behind head on main.

❗ Current head 680facf differs from pull request most recent head c6e9ad1. Consider uploading reports for the commit c6e9ad1 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #66      +/-   ##
==========================================
+ Coverage   89.25%   89.50%   +0.24%     
==========================================
  Files          19       19              
  Lines        1182     1191       +9     
==========================================
+ Hits         1055     1066      +11     
+ Misses        127      125       -2     

Files	Coverage Δ
custom_components/lock_code_manager/__init__.py	93.90% <ø> (ø)
...stom_components/lock_code_manager/binary_sensor.py	96.80% <100.00%> (+2.63%)	⬆️
custom_components/lock_code_manager/entity.py	95.97% <ø> (-0.03%)	⬇️
custom_components/lock_code_manager/exceptions.py	92.30% <87.50%> (-7.70%)	⬇️