Correct permissions for .prow.sh

[PrasadG193]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:

Corrects the permission on .prow.sh script to executable to fix the pipelines

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[k8s-ci-robot]

@PrasadG193: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kubernetes-csi-external-snapshot-metadata-unit	cc91039	link	true	/test pull-kubernetes-csi-external-snapshot-metadata-unit

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[carlbraganza]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: carlbraganza, PrasadG193

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[carlbraganza]

/release-note-none

[carlbraganza]

@PrasadG193 I applied the permission change to #49 and removed the linter from the test target. It appears to be making some progress. If it works then we can close this PR.