feat: add transient error for PostgreSQL lock timeouts

[wschurman]

Why

Re-implementation of #714 on top of #715.

How

Prompt:

add new error for pg code 55P03, use PR 714 as reference but a new error class

Test Plan

CI

[wschurman]

• feat: add transient error for PostgreSQL lock timeouts #716 👈 (View in Graphite)
• feat!: move knex-specific database adapter errors into entity-database-adapter-knex #715
• main

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (6de0405) to head (abfd2a1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main      #716    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          110       110            
  Lines        18499     18523    +24     
  Branches      1597       955   -642     
==========================================
+ Hits         18499     18523    +24     

Flag	Coverage Δ
integration	30.72% <83.33%> (+0.06%)	⬆️
unittest	94.95% <100.00%> (+0.14%)	⬆️

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[wschurman]

Merge activity

• Oct 5, 5:05 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Oct 5, 5:07 PM UTC: Graphite rebased this pull request as part of a merge.
• Oct 5, 5:08 PM UTC: @wschurman merged this pull request with Graphite.