Roll back to libgdx 1.5.5 to avoid BitmapFont change conflicts

.gitattributes

@@ -1185,6 +1185,7 @@ forge-gui-desktop/src/test/java/forge/model/FModelTest.java -text
 forge-gui-ios/.classpath -text
 forge-gui-ios/.project -text
 forge-gui-ios/Info.plist.xml -text
+forge-gui-ios/libs/gdx-backend-robovm-sources.jar -text
 forge-gui-ios/libs/gdx-backend-robovm.jar -text
 forge-gui-ios/libs/gdx-sources.jar -text
 forge-gui-ios/libs/gdx.jar -text

forge-gui-android/pom.xml

@@ -96,7 +96,7 @@
         <dependency>
             <groupId>com.badlogicgames.gdx</groupId>
             <artifactId>gdx-backend-android</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.5</version>
         </dependency>
     </dependencies>
 

forge-gui-ios/pom.xml

@@ -74,7 +74,7 @@
         <dependency>
             <groupId>com.badlogicgames.gdx</groupId>
             <artifactId>gdx-backend-robovm</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.5</version>
         </dependency>
     </dependencies>
 </project>

forge-gui-mobile-dev/pom.xml

@@ -27,7 +27,7 @@
         <dependency>
             <groupId>com.badlogicgames.gdx</groupId>
             <artifactId>gdx-backend-lwjgl</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.5</version>
         </dependency>
     <dependency>
       <groupId>com.badlogicgames.gdx</groupId>

forge-gui-mobile/pom.xml

@@ -58,12 +58,12 @@
         <dependency>
             <groupId>com.badlogicgames.gdx</groupId>
             <artifactId>gdx</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.5</version>
         </dependency>
         <dependency>
             <groupId>com.badlogicgames.gdx</groupId>
             <artifactId>gdx-freetype</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.5</version>
         </dependency>
 	</dependencies>