Revert all dependency upgrades (#46)

Signed-off-by: BT (calcastor/mame) <[email protected]>

Author: calcastor

pom.xml

@@ -66,17 +66,17 @@
         <dependency>
             <groupId>com.squareup.retrofit2</groupId>
             <artifactId>retrofit</artifactId>
-            <version>2.11.0</version>
+            <version>2.9.0</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.retrofit2</groupId>
             <artifactId>converter-jackson</artifactId>
-            <version>2.11.0</version>
+            <version>2.9.0</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.retrofit2</groupId>
             <artifactId>converter-gson</artifactId>
-            <version>2.11.0</version>
+            <version>2.9.0</version>
         </dependency>
         <dependency>
             <groupId>co.aikar</groupId>
@@ -86,7 +86,7 @@
         <dependency>
             <groupId>org.java-websocket</groupId>
             <artifactId>Java-WebSocket</artifactId>
-            <version>1.5.6</version>
+            <version>1.5.1</version>
         </dependency>
     </dependencies>