imgtool: fix package's author email
Fix author email after move to new mailing list.
@@ -5,7 +5,7 @@ setuptools.setup(
name="imgtool",
version=imgtool_version,
author="The MCUboot committers",
- author_email="dev-mcuboot@lists.runtime.co",
+ author_email="mcuboot@groups.io",
description=("MCUboot's image signing and key management"),
license="Apache Software License",
url="http://github.com/JuulLabs-OSS/mcuboot",
