python-PyQt5: update to 5.15.0.

PyQt5 officially only supports Python 3.
However, it works with Python 2, at least with calibre.
Don't merge with python3 version, since it build with different
dependencies. And there's some conflicts when generate binary.

srcpkgs/python-PyQt5/template

@@ -1,8 +1,8 @@
 # Template file for 'python-PyQt5'
 pkgname=python-PyQt5
-version=5.13.2
-revision=3
-_sipver=4.19.19
+version=5.15.0
+revision=1
+_sipver=4.19.23
 wrksrc="PyQt5-${version}"
 hostmakedepends="pkg-config
  python-devel python-sip-devel python-dbus-devel qt5
@@ -17,8 +17,8 @@ short_desc="Python 2 bindings for the Qt5 toolkit"
 maintainer="Orphaned <orphan@voidlinux.org>"
 license="GPL-3.0-only"
 homepage="https://riverbankcomputing.com/software/pyqt/intro"
-distfiles="https://www.riverbankcomputing.com/static/Downloads/PyQt5/${version}/PyQt5-${version}.tar.gz"
-checksum=adc17c077bf233987b8e43ada87d1e0deca9bd71a13e5fd5fc377482ed69c827
+distfiles="${PYPI_SITE}/P/PyQt5/PyQt5-${version}.tar.gz"
+checksum=c6f75488ffd5365a65893bc64ea82a6957db126fbfe33654bcd43ae1c30c52f9
 lib32disabled=yes
 
 post_extract() {