Per 9999 auto publishing (#311)

* Update server-id in release.yml to use 'central' for Maven deployment

* Bump SDK version to 2.2.2-alpha.2 and enable auto-publishing in pom.xml

Author: prklm10

pom.xml

@@ -5,7 +5,7 @@
 
   <groupId>io.percy</groupId>
   <artifactId>percy-appium-app</artifactId>
-  <version>2.2.2-alpha.1</version>
+  <version>2.2.2-alpha.2</version>
   <packaging>jar</packaging>
 
   <name>${project.groupId}:${project.artifactId}</name>
@@ -187,6 +187,7 @@
           <extensions>true</extensions>
           <configuration>
             <publishingServerId>central</publishingServerId>
+            <autoPublish>true</autoPublish>
           </configuration>
         </plugin>
       <plugin>

src/main/java/io/percy/appium/Environment.java

@@ -4,7 +4,7 @@
 
 public class Environment {
     private AppiumDriver driver;
-    public static final String SDK_VERSION = "2.2.1-alpha.1";
+    public static final String SDK_VERSION = "2.2.1-alpha.2";
     private static final String SDK_NAME = "percy-appium-app";
     private static String percyBuildID;
     private static String percyBuildUrl;