Updated to Mojolicious 7.20

Change-Id: I3a194d4a4bc912950619a77e7a743c3f930eb544
diff --git a/t/script/single.t b/t/script/single.t
index 40b7940..486e1b6 100644
--- a/t/script/single.t
+++ b/t/script/single.t
@@ -4,7 +4,7 @@
 use File::Basename 'dirname';
 use File::Spec::Functions qw/catdir catfile/;
 use File::Temp qw/ :POSIX /;
-use Mojo::Util qw/slurp/;
+use Mojo::File;
 use Mojo::JSON qw/decode_json/;
 use IO::Uncompress::Gunzip;
 use Test::More;
@@ -41,7 +41,7 @@
 );
 
 ok(-f $output, 'Output does exist');
-ok((my $file = slurp $output), 'Slurp data');
+ok((my $file = Mojo::File->new($output)->slurp), 'Slurp data');
 ok((my $json = decode_json $file), 'decode json');
 is($json->{textType}, 'Zeitung: Tageszeitung', 'text type');
 is($json->{title}, 'Beispiel Text', 'Title');
@@ -110,7 +110,7 @@
 );
 
 ok(-f $output, 'Output does exist');
-ok(($file = slurp $output), 'Slurp data');
+ok(($file = Mojo::File->new($output)->slurp), 'Slurp data');
 ok(($json = decode_json $file), 'decode json');
 
 is($json->{textType}, 'Zeitung: Tageszeitung', 'text type');
@@ -184,7 +184,7 @@
 );
 
 ok(-f $output, 'Output does exist');
-ok(($file = slurp $output), 'Slurp data');
+ok(($file = Mojo::File->new($output)->slurp), 'Slurp data');
 ok(($json = decode_json $file), 'decode json');
 
 is($json->{data}->{text}, 'Selbst ist der Jeck', 'Text');