Release v1.3.8

- Show a one-off warning when run on Android 14+ to document the issues
  with system intercerception there explicitly.

Author: pimterry

app/build.gradle

@@ -9,8 +9,8 @@ android {
         applicationId "tech.httptoolkit.android.v1"
         minSdkVersion 21
         targetSdkVersion 33
-        versionCode 27
-        versionName "1.3.7"
+        versionCode 28
+        versionName "1.3.8"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"