Set source and target versions to Java 8.

Isira-Seneviratne · Isira-Seneviratne · commit 0526a5148dfc · 2020-11-01T06:28:52.000+05:30
diff --git a/build.gradle b/build.gradle
@@ -2,8 +2,8 @@ allprojects {
     apply plugin: 'java-library'
     apply plugin: 'maven'
 
-    sourceCompatibility = 1.7
-    targetCompatibility = 1.7
+    sourceCompatibility = 1.8
+    targetCompatibility = 1.8
 
     version 'v0.20.2'
     group 'com.github.TeamNewPipe'
