[Release] Update version to 8.4.1

[elasticmachine]

Updates references to the new release 8.4.1.

Merge after the release 8.4.0.

[elasticmachine]

❕ Build Aborted

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Build stats

• Start Time: 2022-07-27T13:10:12.419+0000

• Duration: 122 min 21 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4923
Skipped	17
Total	4940

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	97.297% (72/74)	👍 0.075
Files	69.163% (157/227)	👍 1.145
Classes	69.042% (310/449)	👍 0.943
Methods	53.219% (868/1631)	👍 1.211
Lines	39.274% (9365/23845)	👍 0.93
Conditionals	100.0% (0/0)	💚