NO-JIRA: Increase `checkAlertmanagerAPIVerbs` timeout

[rexagod]

The AlertmanagerAPI test flakes owing to a short poll: https://prow.ci.openshift.org/view/gs/test-platform-results/pr-logs/pull/openshift_cluster-monitoring-operator/2078/pull-ci-openshift-cluster-monitoring-operator-master-e2e-agnostic-operator/1782698057477918720#1:build-log.txt%3A84-86

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• [ ] I added CHANGELOG entry for this change.
• [x] No user facing changes, so no entry in CHANGELOG was needed.

[openshift-ci-robot]

@rexagod: This pull request explicitly references no jira issue.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2330): >* [ ] I added CHANGELOG entry for this change. >* [x] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci[bot]]

@rexagod: all tests passed!

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[jan--f]

/lgtm

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jan--f, rexagod

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/openshift/cluster-monitoring-operator/blob/master/OWNERS)~~ [jan--f,rexagod] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[jan--f]

Next time, feel free to raise a bug for things like this.

[openshift-bot]

[ART PR BUILD NOTIFIER]

This PR has been included in build cluster-monitoring-operator-container-v4.17.0-202404241149.p0.g0b64dbc.assembly.stream.el9 for distgit cluster-monitoring-operator. All builds following this will include this PR.