[tracker-miners] build: Bump version early for GNOME 40

[Carlos Garnacho <carlosg src gnome org>]

commit c428b7bc6eba2797f45ccc939559ebf068930d87
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Oct 12 19:20:41 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 ed4d72c65..1e0e72412 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('tracker-miners', 'c',
-        version: '3.0.1',
+        version: '3.1.0.alpha',
         meson_version: '>=0.51')
 
 gnome = import('gnome')