test(clowder): bump PG version to 16

[skateman]

Secure Coding Practices Checklist GitHub Link

• https://github.com/RedHatInsights/secure-coding-checklist

Secure Coding Checklist

• Input Validation
• Output Encoding
• Authentication and Password Management
• Session Management
• Access Control
• Cryptographic Practices
• Error Handling and Logging
• Data Protection
• Communication Security
• System Configuration
• Database Security
• File Management
• Memory Management
• General Coding Practices

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.77%. Comparing base (37bc99b) to head (3ddb216).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2075   +/-   ##
=======================================
  Coverage   98.77%   98.77%           
=======================================
  Files         224      224           
  Lines        4722     4722           
=======================================
  Hits         4664     4664           
  Misses         58       58           

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