Bump core-ktx from 1.7.0 to 1.8.0 (#3794)

Summary:
Bumps core-ktx from 1.7.0 to 1.8.0.

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Pull Request resolved: https://github.com/facebook/flipper/pull/3794

Reviewed By: lawrencelomax

Differential Revision: D37070913

Pulled By: passy

fbshipit-source-id: 98f817ee76bde2dfec2ebf3eb5080214c746cdc4

android/tutorial/build.gradle

@@ -41,7 +41,7 @@ android {
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$KOTLIN_VERSION"
     implementation "androidx.appcompat:appcompat:1.4.1"
-    implementation "androidx.core:core-ktx:1.7.0"
+    implementation "androidx.core:core-ktx:1.8.0"
 
     // Flipper
     // For simplicity, we use Flipper for both debug and release builds here.