Pin ACK runtime to v0.44.0

[a-hilaly]

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[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-hilaly

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[a-hilaly]

/retest

[a-hilaly]

/retest

[ack-prow]

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

Test name	Commit	Details	Required	Rerun command
verify-attribution	88c4960	link	false	/test verify-attribution
s3-olm-test	88c4960	link	false	/test s3-olm-test
eks-controller-test	88c4960	link	true	/test eks-controller-test
dynamodb-controller-test	88c4960	link	true	/test dynamodb-controller-test
eventbridge-controller-test	88c4960	link	true	/test eventbridge-controller-test
ec2-controller-test	88c4960	link	true	/test ec2-controller-test

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