In debian/watch no matching files for watch line https://github.com/weidai11/cryptopp/releases .*/CRYPTOPP_(\d[\d_]+)\.(?:tar\.xz|txz|tar\.bz2|tbz2|tar\.gz|tgz|zip)
There is 1 open security issue in bullseye.
You can find information about how to handle this issue in the security team's documentation.