[DPE-6555] Add read only URIs

[dragomirp]

• Implementing DA158:
  • Always set a read only endpoint
  • Set read-only-uris if client has a recent data-platform-libs
• Update libs

dpl changes PR: canonical/data-platform-libs#206

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 71.94%. Comparing base (32252a5) to head (1109902).

Files with missing lines	Patch %	Lines
src/relations/postgresql_provider.py	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #783      +/-   ##
==========================================
- Coverage   71.97%   71.94%   -0.04%     
==========================================
  Files          15       15              
  Lines        3479     3482       +3     
  Branches      532      533       +1     
==========================================
+ Hits         2504     2505       +1     
- Misses        845      846       +1     
- Partials      130      131       +1     

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