fix the publish script to update all pom files (#570)

Author: xiazhvera

samples/Android/AndroidKeyChainPubSub/src/main/java/androidkeychainpubsub/pom.xml

@@ -20,7 +20,7 @@
                 <dependency>
                     <groupId>software.amazon.awssdk.iotdevicesdk</groupId>
                     <artifactId>aws-iot-device-sdk</artifactId>
-                    <version>1.20.1</version>
+                    <version>1.20.2</version>
                 </dependency>
             </dependencies>
         </profile>

utils/publish-release.sh

@@ -61,7 +61,7 @@ git add documents/ANDROID.md
 git add android/iotdevicesdk/build.gradle
 git add samples/Android/app/build.gradle
 # Add all the sample pom files
-find . -name "pom.xml" -maxdepth 4 -mindepth 3 -exec git add {} +
+find . -name "pom.xml" -exec git add {} +
 # go back to the utils folder
 cd utils