Maybe actually actually fix minimal versions tests too

Author: jonhoo

Cargo.toml

@@ -35,7 +35,7 @@ native-mux = ["openssh-mux-client"]
 
 [dependencies]
 tempfile = "3.1.0"
-shell-escape = "0.1"
+shell-escape = "0.1.5"
 tokio = { version = "1", features = [ "process", "io-util", "macros" ] }
 tokio-pipe = "0.2.8"
 
@@ -45,7 +45,7 @@ io-lifetimes = "0.5"
 once_cell = "1.8.0"
 dirs = "4.0.0"
 
-openssh-mux-client = { version = "0.14.2", optional = true }
+openssh-mux-client = { version = "0.14.0", optional = true }
 # needed to make openssh-mux-client compile with -Zminimal-versions
 serde = "1.0.103"