Kn operator 1.9.6

[matzew]

Fixes JIRA SRVKE-1491

Proposed Changes

• go with the new 1.9.6 release of the kn operator (to be able to consume [release-1.9] Add more env vars for pingsource adapter env var preservation knative/operator#1538)

[openshift-ci]

@matzew: 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
ci/prow/4.12-upgrade-tests-aws-ocp-412	67f62a4	link	false	/test 4.12-upgrade-tests-aws-ocp-412
ci/prow/4.12-upgrade-kitchensink-ocp-412	67f62a4	link	false	/test 4.12-upgrade-kitchensink-ocp-412

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[ReToCode]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: matzew, ReToCode

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