Corrected the sha256 image tag for DSPO

[amadhusu]

The issue resolved by this Pull Request:

Resolves RHOAIENG-6563

Description of your changes:

Rectified the correct sha256 tag for DSPO

Testing instructions

Sanity Checks

Checklist

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

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[dsp-developers]

A new image has been built to help with testing out this PR: quay.io/opendatahub/data-science-pipelines-operator:pr-637
An OCP cluster where you are logged in as cluster admin is required.

To use this image run the following:

cd $(mktemp -d)
git clone git@github.com:opendatahub-io/data-science-pipelines-operator.git
cd data-science-pipelines-operator/
git fetch origin pull/637/head
git checkout -b pullrequest a55a5cc3c65847a549ea264f37c3615cebe6bd62
oc new-project opendatahub
make deploy IMG="quay.io/opendatahub/data-science-pipelines-operator:pr-637"

More instructions here on how to deploy and test a Data Science Pipelines Application.