Update scalacache-caffeine to 1.0.0-M6

[exoego]

Supersedes #2340

[codecov]

Codecov Report

Base: 80.58% // Head: 80.58% // No change to project coverage 👍

Coverage data is based on head (e3706b5) compared to base (7052507).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2786   +/-   ##
=======================================
  Coverage   80.58%   80.58%           
=======================================
  Files         149      149           
  Lines        2859     2859           
  Branches      197      200    +3     
=======================================
  Hits         2304     2304           
  Misses        555      555           

Impacted Files	Coverage Δ
.../scala/org/scalasteward/core/util/UrlChecker.scala	100.00% <100.00%> (ø)

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