Fix CI's podman apt-get repo url

[LNSD]

This PR fixes the CI issue related to the podman package installation step.

Context

The CI test job has consistently failed with a 404 error in the Podman setup step.

[...]
Ign:35 https://download.opensuse.org/repositories/devel:kubic:libcontainers:unstable/xUbuntu_22.04  InRelease
Err:36 https://download.opensuse.org/repositories/devel:kubic:libcontainers:unstable/xUbuntu_22.04  Release
  Redirection from https to 'http://download.opensuse.org/repositories/devel:kubic:libcontainers:/unstable/xUbuntu_22.04/Release' is forbidden [IP: 195.135.223.226 443]
Reading package lists...
E: The repository 'https://download.opensuse.org/repositories/devel:kubic:libcontainers:unstable/xUbuntu_22.04  Release' does not have a Release file.
Error: Process completed with exit code 100.

Issuing a GET request to that endpoint reveals that the path has changed (and the podman documentation has not been updated accordingly).

curl -fsSL -kv https://download.opensuse.org/repositories/devel:kubic:libcontainers:unstable/xUbuntu_22.04/Release  

Multiple redirections (301 Moved permanently) happen before the final URL is queried:

[...]
* Ignoring the response-body
* Connection #1 to host download.opensuse.org left intact
* Issue another request to this URL: 'http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/unstable/xUbuntu_22.04/Release'
* Found bundle for host: 0x5589f0eef300 [serially]
* Can not multiplex, even if we wanted to
* Re-using existing connection with host download.opensuse.org
> GET /repositories/devel:/kubic:/libcontainers:/unstable/xUbuntu_22.04/Release HTTP/1.1
> Host: download.opensuse.org
> User-Agent: curl/8.4.0
> Accept: */*
> 
< HTTP/1.1 200 OK
< date: Wed, 15 Nov 2023 15:49:46 GMT
< server: Mojolicious (Perl)
< cache-control: public, max-age=101
< content-disposition: inline;filename="Release"
< content-length: 732
< content-type: application/x-download;name="Release"
< 
[...]

So, the new URL should contain / after the ::

http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/unstable/xUbuntu_22.04/Release

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[LNSD]

I can confirm the issue has been solved with this fix: https://github.com/LNSD/testcontainers-node/pull/3

[kiview]

We can merge once the GHA pipeline finished, thanks for taking care of this 🙌

[kiview]

Merged, since the failing tests were unrelated to this change, thanks again for looking into this @LNSD 👍

[LNSD]

Merged, since the failing tests were unrelated to this change, thanks again for looking into this @LNSD 👍

Nice! Happy to help 💪🏼 😁