Bump ndk (#72)

Summary:
Bump to the latest NDK.

Pull Request resolved: facebookincubator/fbjni#72

Test Plan: ./gradlew assembleDebug

Reviewed By: lblasa

Differential Revision: D32593098

Pulled By: passy

fbshipit-source-id: e5a35070e7b85e4926157d6bf07496cadd01606c

Author: passy

deps/fbjni/build.gradle

@@ -38,9 +38,8 @@ repositories {
 }
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion '29.0.3'
-    ndkVersion '21.1.6352462'
+    compileSdkVersion 31
+    ndkVersion '23.1.7779620'
 
     externalNativeBuild {
         cmake {