Fixes Maven Central publications

[mattsilber]

• Updates Maven Central publication URL from s01 to ossrg-staging-api
• Switches from password to token-based authentication
• Adds POST request to promote the artifact to the publisher portal on CI artifact publication completion

Documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.63%. Comparing base (d255539) to head (e5cabf8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #146   +/-   ##
=======================================
  Coverage   83.63%   83.63%           
=======================================
  Files          10       10           
  Lines         611      611           
  Branches       76       76           
=======================================
  Hits          511      511           
  Misses         67       67           
  Partials       33       33           

Flag	Coverage Δ
unit	83.63% <ø> (ø)

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