update to golang 1.26

[falconizmi]

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[sonarqubecloud]

Quality Gate passed

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[falconizmi]

waiting for this to be merged #2040

[openshift-ci]

@falconizmi: 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/unit	3259770	link	true	/test unit
ci/prow/e2e-openshift-fips	3259770	link	true	/test e2e-openshift-fips
ci/prow/e2e-openshift	3259770	link	true	/test e2e-openshift
ci/prow/e2e-openshift-helm	3259770	link	true	/test e2e-openshift-helm

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