allow ignore-bot to fail because resource not accessible by integration

[fuxingloh]

What kind of PR is this?:

/kind fix

What this PR does / why we need it:

Allow get authenticated to fail because 'github-token' cannot access client.users.getAuthenticated()

[codecov]

Codecov Report

Merging #60 (cfeadb7) into main (5563bc1) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #60   +/-   ##
=======================================
  Coverage   98.19%   98.19%           
=======================================
  Files          14       14           
  Lines         444      444           
  Branches      122      121    -1     
=======================================
  Hits          436      436           
  Misses          4        4           
  Partials        4        4           

Impacted Files	Coverage Δ
src/ignore.ts	95.83% <100.00%> (ø)

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