Use /usr/bin/env bash instead of /bin/bash for scripts

Vagrant/scripts/install-botsv2.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
     # Thanks to @MHaggis for this addition!
     # It is recommended to only uncomment the attack-only dataset comment block.

Vagrant/scripts/install-botsv3.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 #Thanks to @MHaggis for this addition!
 #More information on BOTSv3 can be found at https://github.com/splunk/botsv3