fix: resolve all gosec issues

[TylerGillson]

No description provided.

[codecov]

Codecov Report

Merging #158 (7607329) into main (1c960f8) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 7607329 differs from pull request most recent head fda2694. Consider uploading reports for the commit fda2694 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #158   +/-   ##
=======================================
  Coverage   56.69%   56.69%           
=======================================
  Files           9        9           
  Lines         889      889           
=======================================
  Hits          504      504           
  Misses        357      357           
  Partials       28       28           

Files	Coverage Δ
internal/sinks/alertmanager.go	80.90% <100.00%> (ø)

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