libsigc++: Update to 2.8.0

mingw-w64-libsigc++/PKGBUILD

@@ -3,7 +3,7 @@
 _realname=libsigc++
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=2.7.2
+pkgver=2.8.0
 pkgrel=1
 pkgdesc="Libsigc++ implements a full callback system for use in widget libraries - V2 (mingw-w64)"
 arch=('any')
@@ -13,7 +13,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-gcc" "${MINGW_PACKAGE_PREFIX}-pkg-config")
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 options=('staticlibs' 'strip')
 source=("https://download.gnome.org/sources/libsigc++/${pkgver%.*}/libsigc++-${pkgver}.tar.xz")
-sha256sums=('38aa3c1002887cb780eec04461e245b56942adbfddeec1aa7812687f7ac9258a')
+sha256sums=('774980d027c52947cb9ee4fac6ffe2ca60cc2f753068a89dfd281c83dbff9651')
 
 build() {
   [[ -d "${srcdir}/build-${MINGW_CHOST}" ]] && rm -rf "${srcdir}/build-${MINGW_CHOST}"