Improve log message 'skip incident'

[okurz]

Instead of sounding like a command the informative message should really
only tell what qem-bot does :)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5d4cf4a) 66.82% compared to head (65415be) 66.92%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #166      +/-   ##
==========================================
+ Coverage   66.82%   66.92%   +0.10%     
==========================================
  Files          24       25       +1     
  Lines        1658     1660       +2     
==========================================
+ Hits         1108     1111       +3     
+ Misses        550      549       -1     

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