Update dependency elastic/beats to v8.13.4

This MR contains the following updates:

Package	Type	Update	Change
elastic/beats	ironbank-github	patch	v8.13.3 -> v8.13.4

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Release Notes

elastic/beats (elastic/beats)

v8.13.4: Beats 8.13.4

Compare Source

Downloads: https://elastic.co/downloads/beats Release notes: https://www.elastic.co/guide/en/beats/libbeat/8.13/release-notes-8.13.4.html

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