[Detection Engine] Adds 8.6 rules

[terrancedejesus]

Summary

Pull updates to detection rules from https://github.com/elastic/detection-rules/tree/64dd305867582d4c10cea2380d7831ad782dff20.

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines,
  uses sentence case text and includes i18n support

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 4308594
• Storybooks Preview

Metrics [docs]

Unknown metric groups

ESLint disabled in files

id	before	after	diff
osquery	1	2	+1

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
fleet	59	65	+6
osquery	108	113	+5
securitySolution	441	447	+6
total			+19

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
fleet	67	73	+6
osquery	109	115	+6
securitySolution	518	524	+6
total			+20

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @terrancedejesus

[brokensound77]

LGTM