fix: Upgrade bouncycastle dependency to 1.78.1 (#205)

Author: jakobbuis

android/build.gradle

@@ -17,6 +17,6 @@ dependencies {
     //noinspection GradleDynamicVersion
     implementation 'com.facebook.react:react-native:+'  // From node_modules
     // Bouncy Castle dependencies
-    implementation 'org.bouncycastle:bcprov-jdk15on:1.70'
-    implementation 'org.bouncycastle:bcpkix-jdk15on:1.70'
-}
+    implementation 'org.bouncycastle:bcprov-jdk15to18:1.78.1'
+    implementation 'org.bouncycastle:bcpkix-jdk15to18:1.78.1'
+}