help request: Debian APT repo (repos.apiseven.com) is outdated — documented `apt install apisix` cannot install versions newer than 3.16.0

[2333xb]

Description

Description

The installation docs recommend installing APISIX from the official Debian APT
repository at repos.apiseven.com. However, that repository appears to be
outdated: its package index only contains apisix up to 3.16.0-0, so the
documented apt install path cannot install current releases.

How to reproduce

Follow the documented steps:

wget -O - http://repos.apiseven.com/pubkey.gpg | sudo apt-key add -
echo "deb http://repos.apiseven.com/packages/debian bullseye main" \
  | sudo tee /etc/apt/sources.list.d/apisix.list
sudo apt update
sudo apt install -y apisix=3.17.0-0

### Environment

- APISIX version (run `apisix version`):
- Operating system (run `uname -a`):
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`):
- etcd version, if relevant (run `curl http://127.0.0.1:9090/v1/server_info`):
- APISIX Dashboard version, if relevant:
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):