8.18.0 Release notes

[nastasha-solomon]

Description

Generate the 8.18.0 release notes and publish them before or on the release day.

To-do

• Draft the release notes
• Add the release notes PR the docs release issue
• Known issues:
  • Carry forward known issues that haven't been fixed yet
  • Update the summaries of known issues that were "fixed" in the current release (add fix details)
  • Document new known issues
• Merge the Security release notes PR

Notes

• New features/enhancements that are outside of the security-docs repo and need release notes: N/A
• Known issues to doc:
  • [Detections & Response][Upgrade to 8.x] - Known SO corruption issue when upgrading from 7.x to 8.x docs-content#486
• Follow up on these items: N/A

[nastasha-solomon]

8.18 release notes merged.