Use special release PAT for CHANGELOG generation action

[CasperWA]

Fixes #587.

[codecov]

Codecov Report

Merging #588 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #588   +/-   ##
=======================================
  Coverage   91.77%   91.77%           
=======================================
  Files          62       62           
  Lines        3220     3220           
=======================================
  Hits         2955     2955           
  Misses        265      265           

Flag	Coverage Δ
project	91.77% <ø> (ø)
validator	64.65% <ø> (-0.04%)	⬇️

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