chore: tsconfig skiplibcheck:true - dont typecheck dependency d.ts files

[filmaj]

Should unblock #1912

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.26%. Comparing base (220da72) to head (399676a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1913   +/-   ##
=======================================
  Coverage   90.26%   90.26%           
=======================================
  Files          34       34           
  Lines        7666     7666           
  Branches      381      381           
=======================================
  Hits         6920     6920           
  Misses        734      734           
  Partials       12       12           

Flag	Coverage Δ
cli-hooks	94.94% <ø> (ø)
cli-test	96.93% <ø> (ø)
oauth	76.53% <ø> (ø)
socket-mode	59.59% <ø> (ø)
web-api	96.57% <ø> (ø)
webhook	95.27% <ø> (ø)

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