Update scala-library, scala-reflect to 2.12.18

[regadas]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.10 ⚠️

Comparison is base (165e517) 89.49% compared to head (c92ab4c) 89.39%.

❗ Current head c92ab4c differs from pull request most recent head c851629. Consider uploading reports for the commit c851629 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1126      +/-   ##
===========================================
- Coverage    89.49%   89.39%   -0.10%     
===========================================
  Files          124      124              
  Lines        10028    10028              
  Branches       782      782              
===========================================
- Hits          8975     8965      -10     
- Misses        1053     1063      +10     

see 7 files with indirect coverage changes

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