Merge pull request #56 from Perl/oalders/readme

Author: atoomic

README.md

@@ -164,7 +164,7 @@ jobs:
       image: perldocker/perl-tester:${{ matrix.perl-version }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: perl -V
         run: perl -V
       - name: Install Dependencies