Use shared go set-up action

[ReToCode]

Changes

• Use shared go set-up action
• Indirectly bump to golang 1.22
• Should fix https://github.com/knative-extensions/net-gateway-api/actions/runs/10280449982/job/28447822704

/assign @dprotaso
/assign @dsimansk

[ReToCode]

Ref: #759

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.12%. Comparing base (8aa9d20) to head (27c4f7a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #761   +/-   ##
=======================================
  Coverage   79.12%   79.12%           
=======================================
  Files          17       17           
  Lines        1260     1260           
=======================================
  Hits          997      997           
  Misses        227      227           
  Partials       36       36           

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[dsimansk]

/approve
/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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