ssh2 version 0.9.5-dsa

ssh2 version 0.9.5-dsa / libssh2-sys version 0.3.1-dsa

libssh2-sys version 0.3.1-dsa

ssh2 version 0.9.5

libssh2-sys version 0.3.1

ssh2 version 0.9.4

libssh2-sys version 0.3.0

bump versions...

Pilot error on my part meant (my origin != upstream) that I published
the commit before my PR as the next version, so fix that up.

ci: ubuntu 16 is EOL and no longer available -> 20

bump versions...

Pilot error on my part meant (my origin != upstream) that I published
the commit before my PR as the next version, so fix that up.