Use Travis for CI instead of Jenkins

[bartcharbon]

Changes

• Implemented feature [...]
• Fixed bug [...]

Important notes

Additional information about made changes, known issues, etc.

Checklists

Please update the checklists when steps are completed.

Before merge

• [x] Functionality works & meets specs
• [x] Code reviewed
• [x] Documentation was updated

After merge

• [x] Added feature/fix to draft release notes
• [x] Removed merged branches

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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