feat: add postgresql v18 support

[brianheineman]

No description provided.

[github-actions]

Bencher Report

Branch	add-postgresql-v18-support
Testbed	Linux

⚠️ WARNING: No Threshold found!

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Benchmark	Latency	microseconds (µs)
extract	📈 view plot ⚠️ NO THRESHOLD	167.32 µs
lifecycle	📈 view plot ⚠️ NO THRESHOLD	735,370.00 µs

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.33%. Comparing base (9a71159) to head (368a4d7).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #224   +/-   ##
=======================================
  Coverage   97.33%   97.33%           
=======================================
  Files          75       75           
  Lines        9590     9594    +4     
=======================================
+ Hits         9334     9338    +4     
  Misses        256      256           

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