[release-4.9] Dockerfile.template: bump machine-os version

[vrutkovs]

This should pull in polkit-0.117-3.fc34.2.x86_64 for https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4034

[openshift-ci]

@vrutkovs: No Bugzilla bug is referenced in the title of this pull request.
To reference a bug, add 'Bug XXX:' to the title of this pull request and request another bug refresh with /bugzilla refresh.

In response to this:

[release-4.9] Dockerfile.template: bump machine-os version

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vrutkovs

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[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[vrutkovs]

/test e2e-aws-upgrade

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest-required

Please review the full test history for this PR and help us cut down flakes.

[vrutkovs]

/override ci/prow/e2e-aws-upgrade

API disruption

[openshift-ci]

@vrutkovs: Overrode contexts on behalf of vrutkovs: ci/prow/e2e-aws-upgrade

In response to this:

/override ci/prow/e2e-aws-upgrade

API disruption

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[openshift-ci]

@vrutkovs: all tests passed!

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