chore: Add the version of the Argo CD dependency to version output

[jannfis]

What does this PR do / why we need it:

This adds the version of the Argo CD dependency that the agent has been built against to the version output.

Which issue(s) this PR fixes:

Fixes #?

How to test changes / Special notes to the reviewer:

Checklist

• Documentation update is required by this PR (and has been updated) OR no documentation update is required.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 61.11111% with 7 lines in your changes missing coverage. Please review.

Project coverage is 47.00%. Comparing base (3346a14) to head (3c616d4).

Files with missing lines	Patch %	Lines
internal/version/version.go	61.11%	5 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #423      +/-   ##
==========================================
+ Coverage   46.94%   47.00%   +0.06%     
==========================================
  Files          84       84              
  Lines        8772     8784      +12     
==========================================
+ Hits         4118     4129      +11     
+ Misses       4313     4311       -2     
- Partials      341      344       +3     

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[chetan-rns]

LGTM. Thanks!

$ ./dist/argocd-agentctl version
{"name":"argocd-agent","component":"ctl","version":"0.0.1-alpha","gitRevision":"3c616d4b7d1c11cb7d803e583bc98bdb884de70e","gitStatus":"unknown","goVersion":"go1.24.2","buildDate":"2025-06-25T17:45:15+05:30","argocdVersion":"v2.14.13"}