chore(deps): update dependency com_github_xanzy_ssh_agent to v0.2.1

Author: renovate-bot

WORKSPACE

@@ -106,9 +106,8 @@ go_repository(
 go_repository(
     name = "com_github_xanzy_ssh_agent",
     importpath = "github.com/xanzy/ssh-agent",
-    tag = "v0.2.0",
+    tag = "v0.2.1",
 )
-
 go_repository(
     name = "com_github_mitchellh_go_homedir",
     importpath = "github.com/mitchellh/go-homedir",