actions v4, also test perl 5.40

Author: freyfogle

.github/workflows/ci.yml

@@ -12,15 +12,15 @@ jobs:
 
     strategy:
       matrix:
-        version: ['5.30', '5.32', '5.34', '5.36', '5.38']
+        version: ['5.30', '5.32', '5.34', '5.36', '5.38', '5.40']
 
     env:
       PERL_CPANM_OPT: "--notest --force --skip-satisfied"
       GEO_CODER_OPENCAGE_API_KEY: ${{ secrets.GEO_CODER_OPENCAGE_API_KEY }}
     name: Perl ${{ matrix.version }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up perl
         uses: shogo82148/actions-setup-perl@v1
         with: