Fix #1244 "Migrate to JUnit 5"

[rzo1]

For all changes:

• Is there a issue associated with this PR? Is it referenced in the commit message?

• Does your PR title start with #XXXX where XXXX is the issue number you are trying to resolve?

• Has your PR been rebased against the latest commit within the target branch (typically main)?

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• Is the code properly formatted with mvn git-code-format:format-code -Dgcf.globPattern="**/*" -Dskip.format.code=false?

For code changes:

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Note:

• Fix Ensure SC can be build without a Docker environment #1241 "Ensure SC can be build without a Docker environment"
• Fix Migrate to JUnit 5 #1244 "Migrate to JUnit 5"

Note: Tests were auto-converted via https://github.com/junit-pioneer/convert-junit4-to-junit5