Bump to version 1.47.1 / 73.

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Version 1.48 (Work in progress)

Version 1.47.2 (Work in progress)

FIXED   Some devices (e.g., Samsung) played shutter sound etc when Camera2 API enabled even when

        phone was on silent/vibrate.

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="net.sourceforge.opencamera"

    android:versionCode="72"

    android:versionName="1.47.1"

    android:versionCode="73"

    android:versionName="1.47.2"

    android:installLocation="auto"

    >