revert go-version-file usage in govulncheck gh action

[rsoaresd]

Description

There is a bug when using go-version-file: golang/go#70036, which leads to pick go 1.24 as the go version. Reverting to the first approach of using go-version-input. Slack thread: https://redhat-internal.slack.com/archives/CHK0J6HT6/p1741939607080469?thread_ts=1741889746.719249&cid=CHK0J6HT6

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MatousJobanek, rsoaresd, xcoulon

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• OWNERS [MatousJobanek,rsoaresd,xcoulon]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.09%. Comparing base (42786de) to head (3c4ecd0).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #518   +/-   ##
=======================================
  Coverage   81.09%   81.09%           
=======================================
  Files          43       43           
  Lines        3517     3517           
=======================================
  Hits         2852     2852           
  Misses        578      578           
  Partials       87       87           

Flag	Coverage Δ
unittests	81.09% <ø> (ø)

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[MatousJobanek]

/lgtm