android-tools: depend on python3

This is required by the mkbootimg, repack_bootimg & unpack_bootimg tools
which this package contains.

srcpkgs/android-tools/template

@@ -1,12 +1,13 @@
 # Template file for 'android-tools'
 pkgname=android-tools
 version=31.0.3p1
-revision=3
+revision=4
 archs="armv* aarch64* x86_64* i686* ppc64le*"
 build_style=cmake
 hostmakedepends="perl go protobuf pkg-config"
 makedepends="gtest-devel zlib-devel libusb-devel pcre2-devel
  liblz4-devel libzstd-devel protobuf-devel brotli-devel"
+depends="python3"
 short_desc="Android platform tools (adb and fastboot)"
 maintainer="John <me@johnnynator.dev>"
 license="Apache-2.0, ISC, GPL-2.0-only, MIT"