message: Splunk On-Call changeset reflects `readOnly` property
diff: '@backstage/plugin-splunk-on-call': patch
  ---
  -Splunk OnCall plugin now supports a "read only" mode configuration option for optionally suppressing the rendering of incident trigger-acknowledge-resolve controls from the Backstage UI.
  +The Splunk On-Call plugin now supports an optional `readOnly` property (`<SplunkOnCallEntityCard readOnly />`) for suppressing the rendering of incident trigger-acknowledge-resolve controls from the Backstage UI.
  