fix(#9963): Add logic to handle for f.Close() for util/gpg

[my-git9]

the link issue: #9963

Add logic to handle for f.Close() for util/gpg

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).

[crenshaw-dev]

lgtm, thanks!

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 8 lines in your changes missing coverage. Please review.

Project coverage is 45.87%. Comparing base (e3940cd) to head (da98962).
Report is 2704 commits behind head on master.

Files	Patch %	Lines
util/gpg/gpg.go	50.00%	4 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10130      +/-   ##
==========================================
- Coverage   45.88%   45.87%   -0.01%     
==========================================
  Files         227      227              
  Lines       27373    27385      +12     
==========================================
+ Hits        12560    12564       +4     
- Misses      13109    13113       +4     
- Partials     1704     1708       +4     

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