Updating Android NDK to 21.3.6528147

.travis.yml

@@ -6,10 +6,10 @@ install:
   - curl https://dl.google.com/android/repository/commandlinetools-linux-6200805_latest.zip --output $HOME/android-sdk.zip
   - unzip -qq $HOME/android-sdk.zip -d $HOME/android-sdk
   - export ANDROID_SDK_HOME=$HOME/android-sdk
-  - export ANDROID_NDK_HOME=$ANDROID_SDK_HOME/ndk/21.1.6352462
+  - export ANDROID_NDK_HOME=$ANDROID_SDK_HOME/ndk/21.3.6528147
   # Installing necessary components of Android SDK
   - function installAndroidComponent() { yes | ${ANDROID_SDK_HOME}/tools/bin/sdkmanager --sdk_root=${ANDROID_SDK_HOME} $1 > /dev/null; }
-  - installAndroidComponent "ndk;21.1.6352462"
+  - installAndroidComponent "ndk;21.3.6528147"
   - installAndroidComponent "cmake;3.10.2.4988404"
   # Installing meson, ninja and nasm that are necessary for libdav1d building
   - sudo apt-get install python3-pip python3-setuptools python3-wheel ninja-build