Remove references to io/ioutil package

[austinvazquez]

Package io/ioutil has been deprecated in Go 1.16.

Signed-off-by: Austin Vazquez austin.vazquez.dev@gmail.com

[google-cla]

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[gmlewis]

Thank you, @austinvazquez !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

EDIT: Also awaiting signed CLA before merging.

[codecov]

Codecov Report

Merging #2547 (b18a767) into master (331265b) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2547   +/-   ##
=======================================
  Coverage   97.98%   97.98%           
=======================================
  Files         124      124           
  Lines       10842    10842           
=======================================
  Hits        10623    10623           
  Misses        150      150           
  Partials       69       69           

Impacted Files	Coverage Δ
github/github.go	97.37% <100.00%> (ø)
github/messages.go	100.00% <100.00%> (ø)

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[gmlewis]

Thank you, @valbeat !

Still awaiting signed CLA before merging.

[austinvazquez]

@gmlewis apologies for delay. Signed CLA and performed a rebase from master branch.

[gmlewis]

@gmlewis apologies for delay. Signed CLA and performed a rebase from master branch.

No problem, @austinvazquez ! No apology necessary. Thank you!