2.20.0 beta fixes for llo

[samsondav]

• Bump version and update CHANGELOG for core v2.20.0
• Fix client/server start race for LLO

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Supports

[github-actions]

I see you added a changeset file but it does not contain a tag. Please edit the text include at least one of the following tags:

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[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube