Switch to go 1.19 in CI

[saschagrunert]

What type of PR is this?

/kind ci

What this PR does / why we need it:

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

None

Does this PR introduce a user-facing change?

None

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: saschagrunert

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Needs approval from an approver in each of these files:

• OWNERS [saschagrunert]

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[codecov-commenter]

Codecov Report

Merging #1072 (2cf209c) into main (121dbff) will decrease coverage by 0.72%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1072      +/-   ##
==========================================
- Coverage   34.01%   33.30%   -0.72%     
==========================================
  Files          13       13              
  Lines        1126     1126              
  Branches      389      389              
==========================================
- Hits          383      375       -8     
- Misses        486      494       +8     
  Partials      257      257              

[rphillips]

/lgtm