macOS app version does not match the actual app version

We are currently using jpackage to distribute the CLI as a binary. (using graalvm is [blocked](https://github.com/cryptomator/cli/blob/feature/native-cli/README.md)).

Unfortunately, jpackage puts constraints on the [app version](https://docs.oracle.com/en/java/javase/22/docs/specs/man/jpackage.html#option-app-version) depending on the OS. For macOS, this means that the version _must_ be in the format X.Y.Y, where
* x >= 1 and a natural number
* y >= 0 and a natural number

Especially the first condition imposes a problem, since we are not convinced that even after the refactoring the API is final and hence, would like to release a 0.Y.Y version.