File shebang-env.patch of Package piper

From: Matthias Bach <marix@marix.org>
Date: 2018-10-17 21:18:00 +0200
Subject: Adjust shebangs to directly invoke Python3 instead of via env
Upstream: never

diff --git a/piper.in b/piper.in
index af4b1fa..24db3a3 100755
--- a/piper.in
+++ b/piper.in
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/python3
 
 import gi
 import os