Default to compose v2

[jalaziz]

It seems that the current version of testcontainers first attempts to use compose V1, then tries V2.

In environments where both V1 and V2 are installed (e.g. GitHub Actions), this will always default to V1 with no easy option to use the newer version.

Since V1 is deprecated, testcontainers should probably default to V2. Alternatively, it would be great if there was a way to override the default.

[daniel-glazer]

hey, looks like a good first issue to me.. can I take it?
can you share a link to the guide on how to contribute? @cristianrgreco

[danielglazer]

prefer to open a PR via my personal GitHub account...
couldn't find contributing.md file for this project.
if still needed I would just need to know if direct PR acceptable or some other way is better to submit changes