Windows build: Install ctypes from git

The version on pip is broken with python 3.7

Windows build: Install ctypes from git
The version on pip is broken with python 3.7
f9034701 · Philipp Hörist · 5d24c9bb · f9034701
Commit f9034701 authored 6 years ago by Philipp Hörist
--- a/win/_base.sh
+++ b/win/_base.sh
@@ -92,6 +92,7 @@ function install_deps {
    PIP_REQUIREMENTS="\
 git+https://dev.gajim.org/gajim/python-nbxmpp.git
 git+https://dev.gajim.org/lovetox/pybonjour-python3.git
+git+https://github.com/enthought/pywin32-ctypes.git
 keyring
 python-gnupg
 python-axolotl