[DPE-5833] Create new PostgreSQL version 16 charm

[lucasgameiroborges]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 45.45455% with 6 lines in your changes missing coverage. Please review.

Project coverage is 71.70%. Comparing base (769dda2) to head (26561aa).

Files with missing lines	Patch %	Lines
src/charm.py	40.00%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           16/edge     #680      +/-   ##
===========================================
- Coverage    71.82%   71.70%   -0.12%     
===========================================
  Files           13       13              
  Lines         3219     3227       +8     
  Branches       477      479       +2     
===========================================
+ Hits          2312     2314       +2     
- Misses         791      796       +5     
- Partials       116      117       +1     

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