Moderate chicken upscaling and synchronize speed

Commit 4e9e950c8f increased the chicken
size by 1.5x, which made them noticeably larger than foxes and caused
their movement speed to fall out of sync.

This is a correction Langbart proposed on Phabricator after the commit
to moderate the chicken upscaling to 1.3x and adjust their speed for
better synchronization.

Authored-by: @Langbart
Original source: https://code.wildfiregames.com/rP27910#61427

binaries/data/mods/public/art/actors/fauna/chicken.xml

@@ -4,15 +4,15 @@
   <group>
     <variant frequency="100" name="Mesh">
       <animations>
-        <animation file="quadraped/chicken_idle_01.dae" name="Idle" speed="20"/>
-        <animation file="quadraped/chicken_idle_02.dae" name="Idle" speed="50"/>
-        <animation file="quadraped/chicken_idle_03.dae" name="Idle" speed="30"/>
-        <animation file="quadraped/chicken_idle_03.dae" name="Idle" speed="30"/>
-        <animation file="quadraped/chicken_walk.dae" name="Walk" speed="80"/>
-        <animation file="quadraped/chicken_run_01.dae" name="Run" speed="25"/>
-        <animation file="quadraped/chicken_run_02.dae" name="Run" speed="25"/>
+        <animation file="quadraped/chicken_idle_01.dae" name="Idle" speed="15"/>
+        <animation file="quadraped/chicken_idle_02.dae" name="Idle" speed="35"/>
+        <animation file="quadraped/chicken_idle_03.dae" name="Idle" speed="20"/>
+        <animation file="quadraped/chicken_idle_03.dae" name="Idle" speed="20"/>
+        <animation file="quadraped/chicken_walk.dae" name="Walk" speed="50"/>
+        <animation file="quadraped/chicken_run_01.dae" name="Run" speed="80"/>
+        <animation file="quadraped/chicken_run_02.dae" name="Run" speed="80"/>
         <animation file="quadraped/chicken_attack.dae" name="attack_melee" speed="100"/>
-        <animation file="quadraped/chicken_death.dae" name="Death" speed="75"/>
+        <animation file="quadraped/chicken_death.dae" name="Death" speed="55"/>
       </animations>
       <mesh>skeletal/chicken.dae</mesh>
     </variant>