Update Cel-go to v0.19.0

[khrm]

Changes

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As the author of this PR, please check off the items in this checklist:

• Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
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Release Notes

NONE

[khrm]

/kind misc
/release-note-none

[khrm]

/assign @savitaashture

[savitaashture]

/lgtm

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