GPUParticles: bump shaders version to 140 to enable texture buffer support.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14971 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/shaders/particle.frag

@@ -1,4 +1,4 @@
-#version 130
+#version 140
 uniform sampler2D texture;
 uniform sampler2D normals_and_depth;
 uniform mat4 invproj;

data/shaders/particle.vert

@@ -1,4 +1,4 @@
-#version 130
+#version 140
 uniform mat4 ProjectionMatrix;
 uniform mat4 ViewMatrix;
 uniform float track_x;