[Cherry-pick][RHOAIENG-19923] - ose-oauth-proxy image for kserve and model mesh sh…

[spolti]

…ould be same (#497)

chore: Update oauth-proxy image to the latest tag
registry.redhat.io/openshift4/ose-oauth-proxy@sha256:8507daed246d4d367704f7d7193233724acf1072572e1226ca063c066b858ecf

Cherry-picks: opendatahub-io#497

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[openshift-ci]

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[hdefazio]

/lgtm