Merge pull request #9 from xuchengpu/master

update version to 3.8.4

Author: jinanzhuan

ease-call-kit/build.gradle

@@ -36,7 +36,7 @@ android {
 dependencies {
     //implementation fileTree(dir: 'libs', include: ['*.jar'])
     //api project(':hyphenatechatsdk')
-    implementation 'io.hyphenate:hyphenate-chat:3.8.3'
+    implementation 'io.hyphenate:hyphenate-chat:3.8.4'
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
     implementation 'com.google.android.material:material:1.2.1'