Use -1 to disable key algorithm type in ssh.minimum_key_sizes (#11635)
Use -1 to disable key algorithm type in ssh.minimum_key_sizes (#11635)

Fix #11634

Signed-off-by: Andrew Thornton <6a547fdd28db89120bdd70d4af1f9ba672ccd43a@cantab.net>
cez81/gitea,go-gitea/gitea,vdbt/gitea,cez81/gitea,lafriks/gitea,sapk-fork/gitea,vdbt/gitea,lafriks/gitea,sapk-fork/gitea,sapk-fork/gitea,sapk-fork/gitea,lafriks/gitea,vCaesar/gitea,go-gitea/gitea,vCaesar/gitea,cez81/gitea,go-gitea/gitea