python-contextlib2: enable for clangarm64

mingw-w64-python-contextlib2/PKGBUILD

@@ -10,7 +10,7 @@ pkgver=0.6.0.post1
 pkgrel=2
 pkgdesc="contextlib2 is a backport of the standard library’s contextlib module to earlier Python versions (mingw-w64)"
 arch=('any')
-mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://pypi.python.org/pypi/${_pypiname}"
 license=('PSF')
 depends=("${MINGW_PACKAGE_PREFIX}-python")