update s2i GA image on func-s2i task

[jrangelramos]

Update s2i task to latest GA image

[matejvasek]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jrangelramos, matejvasek

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[matejvasek]

/override "On Cluster Test (1.20.2, ubuntu-latest)"

[openshift-ci]

@matejvasek: Overrode contexts on behalf of matejvasek: On Cluster Test (1.20.2, ubuntu-latest)

In response to this:

/override "On Cluster Test (1.20.2, ubuntu-latest)"

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