`uvx` complains about non-existent `--with`

Reported on Discord:
```
❯ uvx --from ./python/ruff-ecosystem ruff-ecosystem --output-format markdown --force-preview --cache ../ecosystem format ./target/release/ruff ./target/debug/ruff > changes.md
  × Invalid `--with` requirement
  ╰─▶ Distribution not found at: file:///home/astral/ruff/python/python/ruff-ecosystem
```