[maven-release-plugin] prepare release 3.4.0

pom.xml

@@ -15,13 +15,12 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>io.appium</groupId>
     <artifactId>java-client</artifactId>
-    <version>4.0.0-SNAPSHOT</version>
+    <version>3.4.0</version>
     <dependencies>
         <dependency>
             <groupId>com.google.code.gson</groupId>
@@ -77,7 +76,7 @@
         <url>https://github.com/appium/java-client</url>
         <connection>scm:git:ssh://git@github.com/appium/java-client.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/appium/java-client.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>3.4.0</tag>
     </scm>
 
     <developers>