fix: include sql_mysql in the all extra

[vdusek]

Summary

The all meta-extra was missing sql_mysql, so installing crawlee[all] did not pull in the MySQL storage client dependencies (aiomysql, cryptography). This adds it alongside the other SQL extras.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.83%. Comparing base (0c89b6e) to head (1063542).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1895      +/-   ##
==========================================
- Coverage   92.87%   92.83%   -0.04%     
==========================================
  Files         167      167              
  Lines       11699    11699              
==========================================
- Hits        10865    10861       -4     
- Misses        834      838       +4     

Flag	Coverage Δ
unit	92.83% <ø> (-0.04%)	⬇️

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[Mantisus]

Thanks! LGTM.