[Security] 9.4.6 release notes

[natasha-moore-elastic]

Resolves #7975: adds the 9.4.6 Security and Endpoint release notes.

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• release-notes/elastic-security/index.md

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Elastic Docs Style Checker (Vale)

Summary: 2 suggestions found

💡 Suggestions (2): Optional style improvements. Apply when helpful.

File	Line	Rule	Message
release-notes/elastic-security/index.md	282	Elastic.WordChoice	Consider using 'deactivate, deselect, hide, turn off' instead of 'disable', unless the term is in the UI.
release-notes/elastic-security/index.md	283	Elastic.Wordiness	Consider using 'many' instead of 'a large number of'.

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[bhapas]

LGTM #287165]({{kib-pull}}287165)

[szwarckonrad]

Defend Workflows changes LGTM!

[bhapas]

@natasha-moore-elastic Just realised the backport PR did not go through automatically - elastic/kibana#287522

Not sure if this lands in 9.4.6 ?

[bhapas]

@natasha-moore-elastic Just realised the backport PR did not go through automatically - elastic/kibana#287522

Not sure if this lands in 9.4.6 ?

It is merged now.

[bhapas]

Fixes an issue where uploading a large sample log file in Automatic Import failed. Uploads now send at most 1000 samples and show a warning when additional lines are omitted [#287165]({{kib-pull}}287165).

This needs to be removed as it looks.. The fix is not part of BC1 for 9.4.6

Need to remove changes