Use latest pipeline version in e2e test

[enarha]

Changes

Always use the latest pipeline version in the e2e tests. Using a hardcoded version is hard to keep up-to-date and tests are less reliable when done against outdated version.

/kind misc

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[khrm]

I think this is a duplicate of #613

We had some issues that's why we did freezed the version. It's fixed from the Pipelines side. So we can merge #613

[enarha]

Duplicate of #613