Test newer perl versions

Author: perlpunk

.github/workflows/linux.yaml

@@ -30,6 +30,7 @@ jobs:
         - '5.32'
         - '5.34'
         - '5.36'
+        - '5.38'
 
     container:
       image: perl:${{ matrix.perl-version }}
@@ -62,7 +63,7 @@ jobs:
   cover:
     runs-on: ubuntu-latest
     container:
-      image: perl:5.32
+      image: perl:5.38
 
     steps:
     - uses: actions/checkout@v3
@@ -97,7 +98,7 @@ jobs:
   spelling:
     runs-on: ubuntu-latest
     container:
-      image: perl:5.32
+      image: perl:5.38
 
     steps:
     - uses: actions/checkout@v3