flipper android: Upgrade to v0.93

Done to follow the template-app change in
facebook/react-native@d8b115afa, on the path to the RN v0.65
upgrade.

For why we can remove the lines in android/app/build.gradle now, see
the recent commit that added them.

Author: chrisbobbe

android/app/build.gradle

@@ -202,7 +202,6 @@ dependencies {
     //noinspection GradleDynamicVersion
     implementation "com.facebook.react:react-native:+"  // From node_modules
 
-    debugImplementation("com.facebook.fresco:stetho:2.3.0")
     debugImplementation("com.facebook.flipper:flipper:${FLIPPER_VERSION}") {
         exclude group: 'com.facebook.fbjni'
     }
@@ -214,7 +213,6 @@ dependencies {
 
     debugImplementation("com.facebook.flipper:flipper-fresco-plugin:${FLIPPER_VERSION}") {
         exclude group: 'com.facebook.flipper'
-        exclude group:'com.facebook.fresco', module:'stetho'
     }
 
     if (enableHermes) {

android/gradle.properties

@@ -28,4 +28,4 @@ android.useAndroidX=true
 android.enableJetifier=true
 
 # Version of flipper SDK to use with React Native
-FLIPPER_VERSION=0.75.1
+FLIPPER_VERSION=0.93.0