fix: check whole hashbang line if it is /usr/bin/env (#66)

Because pnpm uses the hashbang `/usr/bin/env node`, only checking until the first space will miss the `node`. We only do this if it is the env call, so that it doesn't break any existing code (`/usr/bin/env` would fail the check anyway)

pkg/node-modules/rebuild.go

@@ -442,6 +442,8 @@ func readHashBang(path string) (string, error) {
 		end := strings.IndexAny(str, "\r\n\t ")
 		if end == -1 {
 			end = len(str)
+		} else if str[0:end] == "/usr/bin/env" {
+			end = strings.IndexAny(str, "\r\n\t")
 		}
 		return str[0:end], nil
 		} else {