Removed third party jacoco plugin; removed GitHub Action for tests

[jarrodrobins]

• The DicedLemon Jacoco plugin is no longer supported and can't be used with AGP 8.0, so this is replaced with our own custom script.
• The security team has prevented GitHub from accessing Sonar without a VPN, so these steps have been migrated to alternate CI.
• This PR also fixes up a few tests so the project can be built with Java 17.

[airwallex-sonarqube-prchecks[bot]]

SonarQube Quality Gate

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

88.9% Coverage
0.0% Duplication