Don't bail if we can't find the path for a version reported by py.exe

Some weird or broken installs can be reported by py.exe. We shouldn't
fail to run just because of these installs as others could exist that
work.

src/python_interpreter/mod.rs

@@ -144,7 +144,11 @@ fn find_all_windows(target: &Target, min_python_minor: usize) -> Result<Vec<Stri
                         .unwrap();
                     let path = str::from_utf8(&output.stdout).unwrap().trim();
                     if !output.status.success() || path.trim().is_empty() {
-                        bail!("Couldn't determine the path to python for `py {}`", version);
+                        eprintln!(
+                            "⚠️  Warning: couldn't determine the path to python for `py {}`",
+                            version
+                        );
+                        continue;
                     }
                     interpreter.push(path.to_string());
                     versions_found.insert((major, minor));