Update libssh2 to 1.8.2

tiennou · tiennou · commit eef8463ad03c · 2019-03-27T21:51:49.000+01:00
diff --git a/External/libssh2 b/External/libssh2
@@ -1 +1 @@
-Subproject commit f15b1e297f72882214988101ccdc5e6ad30d7e6e
+Subproject commit 02ecf17a6d5f9837699e8fb3aad0c804caa67eeb
