CI: sync up with changes in packages repo

CI: sync up with changes in packages repo

Catch up with the changes in the packages repository. All changes are
manual cherry picks from the packages repo and listed below.

ci: update github actions to v3

Update checkout and upload-artifact action to v3 to mute nodejs
deprecation warning.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 52570d4242822e3db678f5484c2ca3e72f485d52)

CI: deprecate $(AUTORELEASE) via comments

Autorelease causes some issues like heavy bandwidth usage as well as
non-deterministic package releases whenever someone doesn't use the full
git log.

With this comment all modified packages are checked and if they use
the autorelease feature, kindly comment to the user to change that.

Signed-off-by: Paul Spooren <paul.spooren@rhebo.com>
[ move check to separate workflow to handle ci limitation ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 61d59fd54254b97218aa4e861b1f933d5c5e0bc4)

ci: only comment AUTORELEASE deprecation if exists

If it doesn't exists, don't confuse the contributors.

Signed-off-by: Paul Spooren <mail@aparcar.org>
(cherry picked from commit 75ff4ba358aa0357f0af62cb980568bdc8d390a1)

github-ci: error on any shell errors

Enable `errexit` and `nounset` [POSIX shell options][1]
in `.github/workflows/entrypoint.sh` so that the script fails
if any command within the script fails.

[1]: https://pubs.opengroup.org/onlinepubs/9699919799//utilities/V3_chap02.html#set

Reported-by: Marius Dinu <m95d+git@psihoexpert.ro>
Fixes: https://github.com/openwrt/packages/issues/19953
Signed-off-by: Alois Klink <alois@aloisklink.com>
(cherry picked from commit 18d3c529fa4ab8dafcf6c147cf3cb55792d8ca10)

CI: update build architectures

Removed arc_archs - archs38 was marked as source-only [1].
Renamed powerpc_8540 to powerpc_8548 [2].

1. https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=c01641bcc7236d2e2de3ea65444b0cf2898df351
2. https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=2cad88b99fdae9766de84e6c1cb56f111eb53748

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
(cherry picked from commit 29041e8f8eb42dcd8eee03602348b39dbf9d0c70)

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>