lower prereq to 5.20

.github/workflows/linux.yml

@@ -27,6 +27,9 @@ jobs:
           - "5.30"
           - "5.28"
           - "5.26"
+          - "5.24"
+          - "5.22"
+          - "5.20"
 
     env:
       CIP_TAG: ${{ matrix.cip_tag }}

README.md

@@ -21,7 +21,7 @@ which is copyright under these terms (some of these terms are for other English
 language dictionaries from the SCOWL project, which are not bundled with this
 dist):
 
-COPYRIGHT, SOURCES, and CREDITS:
+## COPYRIGHT, SOURCES, and CREDITS:
 
 The English dictionaries come directly from SCOWL 
 and is thus under the same copyright of SCOWL.  The affix file is

lib/Test/SpellCheck/Plugin/Lang/EN/US.pm

@@ -2,7 +2,7 @@ package Test::SpellCheck::Plugin::Lang::EN::US;
 
 use strict;
 use warnings;
-use 5.026;
+use 5.020;
 use experimental qw( signatures );
 use File::ShareDir::Dist qw( dist_share );
 use Path::Tiny qw( path );
@@ -48,7 +48,7 @@ which is copyright under these terms (some of these terms are for other English
 language dictionaries from the SCOWL project, which are not bundled with this
 dist):
 
-COPYRIGHT, SOURCES, and CREDITS:
+=head2 COPYRIGHT, SOURCES, and CREDITS:
 
 The English dictionaries come directly from SCOWL 
 and is thus under the same copyright of SCOWL.  The affix file is

t/test_spellcheck_plugin_lang_en_us.t

@@ -1,4 +1,4 @@
-use 5.026;
+use 5.020;
 use Test2::V0 -no_srand => 1;
 use Test::SpellCheck::Plugin::Lang::EN::US;
 use Path::Tiny qw( path );