Update sha1 for sshd-core 0.9.0-4-g5967cfd

Build was failing with the following error message:
expected 8f4b6f7ebc54655dc7d25a77665cf51f2b1288b2
received 449ec11c4417b295dbf1661585a50c6ec7d9a452

Change-Id: I77f442694eb403aff50de00ec826724fdb570e70
Set version to 2.9.3

Change-Id: I7e94c450e0bec68f4dff9c90321d007976faffab
Release notes for Gerrit 2.9.3

Change-Id: I26e586c0ba94a743ec02a6ac4a5ff1be9efb119b