!8 Upgrade to 0.50.8

From: @weijin-deng
Reviewed-by: @dwl301
Signed-off-by: @dwl301

vala.spec

@@ -1,15 +1,15 @@
-%global api_ver 0.48
+%global api_ver 0.50
 %global priority 90
 %global vala_binaries vala valac vala-gen-introspect vapigen
 %global vala_manpages valac vala-gen-introspect vapigen
 
 Name:           vala
-Version:        0.48.6
-Release:        2
+Version:        0.50.8
+Release:        1
 Summary:        Compiler Using the GObject Type System
 License:        LGPLv2+ and BSD
 URL:            https://wiki.gnome.org/Projects/Vala
-Source0:        https://download.gnome.org/sources/vala/0.48/vala-%{version}.tar.xz
+Source0:        https://download.gnome.org/sources/vala/0.50/vala-%{version}.tar.xz
 
 BuildRequires:  flex bison glib2-devel gobject-introspection-devel
 BuildRequires:  graphviz-devel libxslt dbus-x11
@@ -120,6 +120,10 @@ fi
 %doc %{_datadir}/devhelp/books/vala-%{api_ver}
 
 %changelog
+* Wed May 19 2021 weijin deng <weijin.deng@turbolinux.com.cn> - 0.50.8-1
+- Upgrade to 0.50.8
+- Update api_ver, Version, Release, Source0
+
 * Wed Jun 3 2020 wutao <wutao61@huawei.com> - 0.48.6-2
 - Upagrade to 0.48.6-2