Add Python requests to alpine and ubuntu-jammy Dockerfile

[xuganyu96]

Some jobs in this CI run failed because openquantumsafe/ci-alpine-amd64:latest and openquantumsafe/ci-ubuntu-jammy:latest do not have the requests Python package. The ubuntu-latest image does have this package, so the CI tests passed.

This pull request adds the step to install requests in the aforementioned Docker images.

[baentsch]

Thanks & LGTM. Only question: Is it worth while keeping supporting Ubuntu Jammy in CI? (Where) Do we promise (doing) that?

[baentsch]

Thanks & LGTM. Only question: Is it worth while keeping supporting Ubuntu Jammy in CI? (Where) Do we promise (doing) that?

Same question regarding Alpine. If it's a fully supported platform, it should also have automated build-and-push in this project.

[xuganyu96]

Thanks & LGTM. Only question: Is it worth while keeping supporting Ubuntu Jammy in CI? (Where) Do we promise (doing) that?

Same question regarding Alpine. If it's a fully supported platform, it should also have automated build-and-push in this project.

@baentsch I don't have a good answer, but I am happy to raise an issue for "reviewing platform test matrix".

From open-quantum-safe/liboqs/PLATFORMS.md it seems like Ubuntu Jammy (i.e. 22.04) and Alpine are not even on the tier list. We might need to either update the tier list, or sunset CI tests on Ubuntu Jammy and/or Alpine.

edit: #78 is very closely related to this discussion.

cc: @dstebila @bhess

[baentsch]

@xuganyu96 I already created open-quantum-safe/liboqs#2304 to track. And indeed #78 is pretty much the same thing. Time to finally address it: I was unhappy to see that you still had to grapple with CI image issues this long after the problem had been identified :-(