nimble requires git
`choosenim` and `nim` can work with either `git` or `ẁget`, but `nimble` can't

### Expected behavior:

```
$ nimble rel
[nim]  Verifying dependencies for cart@0.1.0
  Executing task rel in /home/user/nim/cart.nimble
Hint: used config file '/home/user/.choosenim/toolchains/nim-2.2.0/config/nim.cfg' [Conf]
Hint: used config file '/home/user/.choosenim/toolchains/nim-2.2.0/config/config.nims' [Conf]
Hint: used config file '/home/user/nim/src/config.nims' [Conf]
............................................................
Hint:  [Link]
Hint: mm: arc; opt: size; options: -d:danger
55111 lines; 0.142s; 74.277MiB peakmem; proj: /home/user/nim/src/cart.nim; out: /home/user/nim/build/cart.wasm [SuccessX]

    Success
```
### Actual behavior:

```
$ nimble rel
       Tip: 1 messages have been suppressed, use --verbose to show them.
tools.nim(52)            doCmdEx

    Error:  'git' not in PATH.
```