[merge] Use Java 11 again

Change-Id: I3cc03216236097f4ba7b9de320fc927a603885a3

attachment-viewer/build.gradle

@@ -37,7 +37,7 @@ android {
         targetCompatibility versions.targetCompat
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = '11'
     }
 
     buildFeatures {

diff-match-patch/build.gradle

@@ -3,6 +3,3 @@ apply plugin: 'java-library'
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 }
-
-sourceCompatibility = "8"
-targetCompatibility = "8"

library/ui-styles/build.gradle

@@ -41,7 +41,7 @@ android {
         targetCompatibility versions.targetCompat
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = '11'
     }
     buildFeatures {
         viewBinding true

matrix-sdk-android-rx/build.gradle

@@ -27,7 +27,7 @@ android {
     }
 
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "11"
     }
 }
 

matrix-sdk-android/build.gradle

@@ -72,7 +72,7 @@ android {
     }
 
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "11"
     }
 
     sourceSets {

vector/build.gradle

@@ -296,7 +296,7 @@ android {
     }
 
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = "11"
         freeCompilerArgs += [
                 "-Xopt-in=kotlin.RequiresOptIn",
                 // Fixes false positive "This is an internal Mavericks API. It is not intended for external use."