testing/opkg{-utils,}: upgrade to 0.7.0
https://git.yoctoproject.org/opkg/tree/CHANGELOG.md
The addition of update_config_sub should theoretically resolve the rebuild error on loongarch64, but it has not been tested and the loongarch64 CI is currently inactive for testing/. Temporarily disable on the arch for now until it can be tested.
Edited by mio