Updated packages and fixed some deprecations.

[taitken-splunk]

• Updated any reference to ioutil to the new locations
• Fixed the golang-ci linter configs to be in line with more recent configs
• Fixed references to old protobuf package location

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.80%. Comparing base (bd4b2dc) to head (a5b266f).
⚠️ Report is 68 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/commands/init.go	0.00%	2 Missing ⚠️
internal/commands/fmt.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #306   +/-   ##
=======================================
  Coverage   73.80%   73.80%           
=======================================
  Files          73       73           
  Lines        7021     7021           
=======================================
  Hits         5182     5182           
  Misses       1622     1622           
  Partials      217      217           

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