dev-python/pyicu-1.9.5: add upper limit on dev-libs/icu version

Support for 59.1 was only added in 1.9.7, for 60.1 - in 1.9.8.

Closes: https://bugs.gentoo.org/644806
Package-Manager: Portage-2.3.13, Repoman-2.3.3

dev-python/pyicu/pyicu-1.9.5.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2016 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -21,7 +21,7 @@ KEYWORDS="amd64 x86"
 IUSE="doc"
 
 RDEPEND="${PYTHON_DEPS}
-	dev-libs/icu
+	<dev-libs/icu-59
 "
 # epydoc supports only python2*
 DEPEND="${RDEPEND}