apt-utils.sh: get base-files package version from GHA

[amazingfate]

Description

I have written a python script running in Github workflow: https://github.com/amazingfate/deb-files-parser, which will generate all versions of base-files from debian and ubuntu in a json file: https://github.com/amazingfate/deb-files-parser/blob/master/base-files.json, and now we can get rid of the unstable packages.debian.org or packages.ubuntu.com.
If this change is fine, we can move the repo amazingfate/deb-files-parser to armbian.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• ./compile.sh BOARD=rock-5b BRANCH=vendor BUILD_MINIMAL=yes DEB_COMPRESS=xz DOWNLOAD_MIRROR=china KERNEL_CONFIGURE=no RELEASE=jammy GITHUB_MIRROR=ghproxy KERNEL_GIT=shallow BUILD_DESKTOP=no ENABLE_EXTENSIONS=mesa-vpu DEBUG=yes. Build log:

--> (19) DEBUG: Calling artifact function [ artifact_armbian-base-files_prepare_version()  ]
--> (20) INFO: Found upstream base-files package filename [ base-files_12ubuntu4.7_arm64.deb ]
--> (20) DEBUG: Found package filename [ base-files_12ubuntu4.7_arm64.deb in url http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/pool/main/b/base-files/base-files_12ubuntu4.7_arm64.deb ]
--> (20) INFO: Found base-files upstream package version [ 12ubuntu4.7 ]
--> (20) DEBUG: Found package download url [ http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/pool/main/b/base-files/base-files_12ubuntu4.7_arm64.deb ]

Checklist:

Please delete options that are not relevant.

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[igorpecovnik]

This proxy is limited to repository content, so we can't use nice URL's. Is there a way?

[amazingfate]

Reverse proxy like ghproxy does not support github pages. We can use https://github.armbian.com/base-files.json, and at least at the moment the url is reachable from China.

[amazingfate]

But in case github pages is down for some reason, the ghproxy should save the world for user, it's better to keep this fall back.