The minimum iOS/macOS deployment version is hardcoded in a bunch of different places within the tool. It would be nice if we had a single const we can use everywhere.

Would also be nice if we could make it a variable in the templates so we don't have to change each template manually.

Here's some examples of places it's used:

https://github.com/flutter/flutter/pull/140823/files