Re-enable testcontainers tests

[Kehrlann]

What does this PR do?

Re-enable Testcontainers tests using the latest Ryuk image, v0.10.2, which does not package vulnerabilities - added it to the allow-list in #547

There is one separate commit for each testcontainers version.

Closes #250 .

Code sections where the PR accesses files, network, docker or some external service

Both tests now access Docker; the testcontainers/ryuk:0.10.2 image has been added to the list of required images.

Checklist before merging

• I am the original author of all content provided in the pull request, and I did not copy the content from any other source (see the tests section from our contributing document)
• I have added thorough tests (see the tests section from our contributing document)
• I have filled all places where my pull request accesses files, network, docker, or any other external service (see the section above)

Not applicable:

• I have considered including reachability metadata directly in the library or the framework (see our contributing document)
• I have properly formatted metadata files (see our formatting guide)
• For all tests where I am not the sole author, I have added a comment that proves I may publish them under the specified license (see the tests section from our contributing document)

[Kehrlann]

Updated to ryuk:0.10.2 which does not suffer from the previous patch version's lifecycle issues.