Fixing CI jobs for Big Endian

[Prashant-Jagtap]

What's the problem this PR addresses?

Observed below error while pulling s390x/node image in CI jobs for Big Endian :

Unable to find image 's390x/node:latest' locally
latest: Pulling from s390x/node
docker: no matching manifest for linux/amd64 in the manifest list entries.
See 'docker run --help'.

How did you fix it?

Adds --platform flag to pull s390x node image in CI builds.
Recently node images were updated. This PR fixes this issue

Checklist

• I have read the Contributing Guide.

• I have set the packages that need to be released for my changes to be effective.

• I will check that all automated PR checks pass before the PR gets reviewed.