Merge pull request #3127 from metabase/fix-osx-build-commands

Fix OS X build scripts  [ci skip]

bin/osx-release

-#! /usr/bin/perl -I./bin
+#! /usr/bin/env perl -I./bin
 
 use strict;
 use warnings;

bin/osx-setup

-#! /usr/bin/perl -I./bin
+#! /usr/bin/env perl -I./bin
 
 use strict;
 use warnings;