chore: Restricted mysql2 version to get CI working

[jsumners-nr]

A temporary patch to get our CI working while we investigate why [email protected] is causing our mysql2 promise instrumentation to fail.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.15%. Comparing base (83fd7ee) to head (dc6a37b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2808      +/-   ##
==========================================
- Coverage   97.20%   97.15%   -0.05%     
==========================================
  Files         294      294              
  Lines       46315    46315              
==========================================
- Hits        45021    44999      -22     
- Misses       1294     1316      +22     

Flag	Coverage Δ
integration-tests-cjs-18.x	73.37% <ø> (-0.01%)	⬇️
integration-tests-cjs-20.x	73.38% <ø> (-0.01%)	⬇️
integration-tests-cjs-22.x	73.42% <ø> (-0.01%)	⬇️
unit-tests-18.x	88.99% <ø> (ø)
unit-tests-20.x	88.99% <ø> (ø)
unit-tests-22.x	89.00% <ø> (ø)
versioned-tests-18.x	78.99% <ø> (-0.20%)	⬇️
versioned-tests-20.x	78.99% <ø> (-0.20%)	⬇️
versioned-tests-22.x	79.00% <ø> (-0.20%)	⬇️

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