fix: workaround for emailsender kind image load

[johannes94]

Description

With the docker update in GitHub the emailsender compatiblity tests was broken on loading the image to kind.

@davdhacs tried to fix that for the stackrox/stackrox copy of this workflow with stackrox/stackrox#19050

I tried one of the workarounds from the comment section of that related issue in the kind repo suggested by @porridge. kubernetes-sigs/kind#3795 (comment)

It looks like that fixes the test.

Checklist (Definition of Done)

• Unit and integration tests added
• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.
• Add secret to app-interface Vault or Secrets Manager if necessary
• RDS changes were e2e tested manually
• Check AWS limits are reasonable for changes provisioning new resources

Test manual

[johannes94]

Maybe it's already all running in a temporary directory, but in case it's not, you might want to put the tarf files there rather than current directory, whatever it is.

It's not, I changed the script to use a mktemp -d

[davdhacs]

+1 great!

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: davdhacs, johannes94, kovayur

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[johannes94]

/override ci/prow/e2e

Not relevant to this change.

[openshift-ci]

@johannes94: Overrode contexts on behalf of johannes94: ci/prow/e2e

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In response to this:

/override ci/prow/e2e

Not relevant to this change.

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