kivy/python-for-android: v2022.09.04

Highlights: This is the last release that defaults to Python 3.9 when building hostpython3 and python3. The next one will target Python 3.10 This is the last release that uses Android NDK 23b by default, the next one will use Android NDK 25 This is the last release that defaults to target API 27, the next one will default to target API 31, following the new requirement from Google for apps that need to be distributed on Play Store. In order to fully support API 31 and as a propedeutic change for new features in Kivy, in the next release, python-for-android will use the new SDL2 releases. Full changelog: liblzma: Use p4a_install instead of install, as a file named INSTALL is already present. #2663 (misl6) Force --platform=linux/amd64 in Dockerfile #2660 (misl6) Remove six and enum34 dependency #2657 (misl6) Update supported Python versions #2656 (misl6) Fixes some E275 - assert is a keyword. #2647 (misl6) Updates matplotlib, fixes an issue related to shared libc++ #2645 (misl6) RTSP support for ffmpeg #2644 (alicakici1234) Fixes TypeError: str.join() takes exactly one argument (2 given) in hostpython3/__init__.py", line 69 #2642 (Furtif) Resolve absolute path to local recipes #2640 (dbnicholson) Merges master into develop after release 2022.07.20 #2639 (misl6) Fix webview Back button behaviour #2636 (interlark) Add icon-bg and icon-fg to fix_args #2633 (danigm) Remove stray - in output file name #2581 (dbnicholson) Add option for adding files to res/xml without touching manifest #2330 (rambo