Make maximum sql pool size configurable

[aashikam]

Purpose

Fixes:

Examples

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests
• Checked native-image compatibility

[ThisaruGuruge]

Let's create a 2201.8.x branch and change the base to that branch.

[ThisaruGuruge]

Other than the branch, LGTM.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (2201.8.x@1b95f51). Learn more about missing BASE report.

Files	Patch %	Lines
...ina/stdlib/sql/datasource/SQLWorkerThreadPool.java	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             2201.8.x     #723   +/-   ##
===========================================
  Coverage            ?   80.07%           
  Complexity          ?      109           
===========================================
  Files               ?       45           
  Lines               ?     4006           
  Branches            ?      754           
===========================================
  Hits                ?     3208           
  Misses              ?      541           
  Partials            ?      257           

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