Update HikariCP from 6.2.1 to 7.0.2

[Copilot]

Major version bump for HikariCP in the locker-postgres module.

Changes

• Updated hikaricp.version property from 6.2.1 to 7.0.2 in locker-postgres/pom.xml

Compatibility

• HikariCP 7.x requires JDK 11+ (project uses Java 17)
• No breaking API changes; existing HikariConfig and HikariDataSource usage remains compatible
• All configuration parameters unchanged

Original prompt

Update HikariCP from 6.2.1 to 7.0.2
This is a major version bump so ensure the code is correct.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 35.67%. Comparing base (2646906) to head (4542152).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #111   +/-   ##
=========================================
  Coverage     35.67%   35.67%           
  Complexity      143      143           
=========================================
  Files            34       34           
  Lines          1166     1166           
  Branches        123      123           
=========================================
  Hits            416      416           
  Misses          718      718           
  Partials         32       32           

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