i run a tor relay on a raspberry pi3. all is ok so far but when i try to upgrade tor 0.4.2.7 to the latest unstable version it says something like: N: Skipping acquire of configured file 'main/binary-armhf/Packages' as repository 'https://deb.torproject.org/torproject.org buster InRelease' doesn't support architecture 'armhf'.
what am i doing wrong?