Bump to 3.1.3-1 version

Author: gbalykov

packaging/netcoredbg.spec

@@ -1,6 +1,6 @@
 Name:      netcoredbg
 Summary:   Managed code debugger for CoreCLR
-Version:   3.1.2
+Version:   3.1.3
 Release:   1
 Group:     Development/Toolchain
 License:   MIT

src/version.h

@@ -3,4 +3,4 @@
 // See the LICENSE file in the project root for more information.
 
 // WARNING: do not modify this file! Generated automatically.
-static const char __VERSION[] = "3.1.2-1";
+static const char __VERSION[] = "3.1.3-1";