cpan/Encode - Update to version 3.20

cpan/Encode - Update to version 3.20

$Revision: 3.20 $ $Date: 2023/11/10 01:10:50 $
! t/Aliases.t t/CJKT.t t/Encode.t t/Encoder.t t/Unicode.t t/at-cn.t
  t/at-tw.t t/enc_data.t t/enc_eucjp.t t/enc_module.t t/enc_utf8.t
  t/encoding.t t/fallback.t t/grow.t t/gsm0338.t t/guess.t t/jperl.t
  t/magic.t t/mime-header.t t/mime-name.t t/perlio.t t/rt113164.t
  t/rt65541.t t/rt76824.t t/rt85489.t t/rt86327.t t/truncated_utf8.t
  t/utf8strict.t t/rt.pl
  Fix indirect syntax accordingly to (but not by pulling):
  https://github.com/dankogai/p5-encode/pull/176
! bin/enc2xs
  Pulled: enc2xs: Fix indirect syntax
  https://github.com/dankogai/p5-encode/pull/174
! bin/encguess
  Pulled: encguess: remove duplicate "the"
  https://github.com/dankogai/p5-encode/pull/173
! bin/enc2xs
  Pulled: Fix spelling in comment
  https://github.com/dankogai/p5-encode/pull/171
! t/gsm0338.t
  Pulled: fix gsm0338 test compatibility with perl < 5.8.8
  https://github.com/dankogai/p5-encode/pull/170