Armature: Set outline width to 2.0.

Correspond roughly to 1px width.

source/blender/draw/modes/shaders/armature_envelope_outline_vert.glsl

@@ -5,7 +5,7 @@ uniform mat4 ViewProjectionMatrix;
 uniform mat4 ProjectionMatrix;
 
 uniform vec2 viewportSize;
-uniform float lineThickness = 3.0;
+uniform float lineThickness = 2.0;
 
 /* ---- Instanciated Attribs ---- */
 in vec2 pos0;

source/blender/draw/modes/shaders/armature_shape_outline_geom.glsl

@@ -13,7 +13,7 @@ in vec4 vCol[];
 flat out vec4 finalColor;
 uniform mat4 ProjectionMatrix;
 uniform vec2 viewportSize;
-uniform float lineThickness = 3.0;
+uniform float lineThickness = 2.0;
 
 vec2 compute_dir(vec2 v0, vec2 v1)
 {

source/blender/draw/modes/shaders/armature_sphere_outline_vert.glsl

@@ -2,7 +2,7 @@
 uniform mat4 ViewMatrix;
 uniform mat4 ProjectionMatrix;
 uniform vec2 viewportSize;
-uniform float lineThickness = 3.0;
+uniform float lineThickness = 2.0;
 
 /* ---- Instanciated Attribs ---- */
 in vec2 pos0;