Attempt to go Python3-only

Ubuntu 20.04 no longer really supports Python 2, so we'd have to fork
the packaging code if we wanted to keep support for Python 2
elsewhere.  Given that Python 3 has been around for a more than a
decade and that Python 2 was formally EOLed more than six months ago
as of this writing, this seems like an unnecessary complication.

The biggest change is rewriting the Homebrew formula for Python 3.

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/build-firmware-package.py b/scripts/build-firmware-package.py
index 9a58970..659a63f 100755
--- a/scripts/build-firmware-package.py
+++ b/scripts/build-firmware-package.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import subprocess
 import tempfile