fix(#9963):Add logic to handle for f.Close() for cmd/argocd/commands/admin

[my-git9]

part of issue: #9963

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[codecov]

Codecov Report

Merging #10074 (09e0413) into master (5c08527) will not change coverage.
The diff coverage is n/a.

❗ Current head 09e0413 differs from pull request most recent head a73d014. Consider uploading reports for the commit a73d014 to get more accurate results

@@           Coverage Diff           @@
##           master   #10074   +/-   ##
=======================================
  Coverage   45.89%   45.89%           
=======================================
  Files         227      227           
  Lines       27353    27353           
=======================================
  Hits        12555    12555           
  Misses      13095    13095           
  Partials     1703     1703           

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[crenshaw-dev]

Since this is a test, can you panic instead of just logging the error? That'll help us avoid temp files piling up on any machine that's repeatedly running tests.

[my-git9]

Updated, thx