go.mod: update ssh_config dependency

Previously if you tried to read a HostName in a config file that
looked like this:

```
Host github
    HostName github.com        # This is the host for code review
```

DefaultUserSettings.Get("HostName") would return "github.com        ",
which I think is unintuitive and unexpected.

This behavior is fixed in v1.2 which would return "github.com" in the
above example.

Author: kevinburke

go.mod

@@ -4,7 +4,7 @@ go 1.18
 
 require (
 	github.com/atrox/homedir v1.0.0
-	github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e
+	github.com/kevinburke/ssh_config v1.2.0
 	github.com/magefile/mage v1.8.0
 	github.com/manifoldco/promptui v0.3.3-0.20190221150523-ae9f05e7444d
 	golang.org/x/crypto v0.0.0-20180718160520-a2144134853f
@@ -25,7 +25,6 @@ require (
 	github.com/mattn/go-colorable v0.0.9 // indirect
 	github.com/mattn/go-isatty v0.0.4 // indirect
 	github.com/nicksnyder/go-i18n v1.10.0 // indirect
-	github.com/pelletier/go-buffruneio v0.2.0 // indirect
 	github.com/pelletier/go-toml v1.2.0 // indirect
 	github.com/tsenart/deadcode v0.0.0-20160724212837-210d2dc333e9 // indirect
 	golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3 // indirect

go.sum

@@ -24,8 +24,8 @@ github.com/gordonklaus/ineffassign v0.0.0-20180909121442-1003c8bd00dc h1:cJlkeAx
 github.com/gordonklaus/ineffassign v0.0.0-20180909121442-1003c8bd00dc/go.mod h1:cuNKsD1zp2v6XfE/orVX2QE1LC+i254ceGcVeDT3pTU=
 github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a h1:FaWFmfWdAUKbSCtOU2QjDaorUexogfaMgbipgYATUMU=
 github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a/go.mod h1:UJSiEoRfvx3hP73CvoARgeLjaIOjybY9vj8PUPPFGeU=
-github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e h1:RgQk53JHp/Cjunrr1WlsXSZpqXn+uREuHvUVcK82CV8=
-github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
+github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
+github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -43,8 +43,6 @@ github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
 github.com/nicksnyder/go-i18n v1.10.0 h1:5AzlPKvXBH4qBzmZ09Ua9Gipyruv6uApMcrNZdo96+Q=
 github.com/nicksnyder/go-i18n v1.10.0/go.mod h1:HrK7VCrbOvQoUAQ7Vpy7i87N7JZZZ7R2xBGjv0j365Q=
-github.com/pelletier/go-buffruneio v0.2.0 h1:U4t4R6YkofJ5xHm3dJzuRpPZ0mr5MMCoAWooScCR7aA=
-github.com/pelletier/go-buffruneio v0.2.0/go.mod h1:JkE26KsDizTr40EUHkXVtNPvgGtbSNq5BcowyYOWdKo=
 github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=