Update k0s certs for CI

[agrare]

Fixes https://github.com/ManageIQ/kubeclient/actions/runs/18436365095

This fails due to the cert in the test kubeconfig files expiring which causes the certificate verification to fail here https://github.com/ManageIQ/kubeclient/blob/master/test/test_config.rb#L279

  1) Failure:
KubeclientConfigTest#test_allinone_nopath [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

  2) Failure:
KubeclientConfigTest#test_allinone [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

  3) Failure:
KubeclientConfigTest#test_external [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

  4) Failure:
KubeclientConfigTest#test_insecure_custom_ca [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

  5) Failure:
KubeclientConfigTest#test_concatenated_ca [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

  6) Failure:
KubeclientConfigTest#test_explicit_secure [/Users/runner/work/kubeclient/kubeclient/vendor/bundle/ruby/3.5.0+4/gems/minitest-5.15.0/lib/minitest/assertions.rb:183]:
Expected false to be truthy.

23 runs, 146 assertions, 6 failures, 0 errors, 0 skips

[agrare]

Ref #668 (comment)