For the record there are quite a few new algos in GPG, most notably ed25519. While RSA 7680 offers 192 bits of security [0] ed25519 on the other hand is offering 128 bits of security. GnuPG 2.3 will have ed448/goldilocks available [2] and that should offer 224 bits of security [3] so in theory it should be better than RSA 7680.
I don't mind putting my encrypted passwords in a private GitHub repo but I understand the concern.