[tracker] build: Bump version early for GNOME 40

[Carlos Garnacho <carlosg src gnome org>]

commit 782ceecbda91ae15ae8191e3e933099357c9d3a6
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Oct 12 19:17:32 2020 +0200

    build: Bump version early for GNOME 40
    
    Next stable release will be 3.1.0.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 72c6e7fed..3121bfcac 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('tracker', 'c', 'vala',
-        version: '3.0.1',
+        version: '3.1.0.alpha',
         meson_version: '>=0.50')
 
 gnome = import('gnome')