Release activemq package for Kibana 8

[kaiyan-sheng]

What does this PR do?

This PR is to release the activemq package for Kibana 8.0.0.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

[elasticmachine]

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Build stats

• Start Time: 2021-11-29T18:11:37.365+0000

• Duration: 17 min 49 sec

• Commit: 069d8fc

Test stats 🧪

Test	Results
Failed	0
Passed	52
Skipped	0
Total	52

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