Update to Guava 22 and Mockito 2.8.47

Author: twz123

pom.xml

@@ -180,7 +180,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>14.0.1</version>
+            <version>22.0</version>
         </dependency>
         <dependency>
             <groupId>javax.persistence</groupId>
@@ -195,7 +195,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>2.0.31-beta</version>
+            <version>2.8.47</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

src/main/java/de/zalando/sprocwrapper/proxy/SProcProxy.java

@@ -7,7 +7,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Objects;
+import com.google.common.base.MoreObjects;
 import com.google.common.reflect.AbstractInvocationHandler;
 
 import de.zalando.sprocwrapper.dsprovider.DataSourceProvider;
@@ -56,9 +56,9 @@ protected Object handleInvocation(final Object proxy, final Method method, final
     @Override
     public String toString() {
         return
-            Objects.toStringHelper(this)                          //
-                   .addValue(description)                         //
-                   .add("dataSourceProvider", dataSourceProvider) //
-                   .toString();
+            MoreObjects.toStringHelper(this)                          //
+                       .addValue(description)                         //
+                       .add("dataSourceProvider", dataSourceProvider) //
+                       .toString();
     }
 }