fix: use full path to pactflow binary as it may be invoked from anywh…

…ere via npx

bin/pactflow.ts

@@ -11,7 +11,7 @@ const args = process.argv.slice(2);
 const opts = standaloneUseShell ? { shell: true } : {};
 
 const { error, status } = childProcess.spawnSync(
-  standalone().pactflowPath,
+  standalone().pactflowFullPath,
   setStandaloneArgs(args, standaloneUseShell),
   {
     stdio: 'inherit',