use cabal 3.8 in ci.yml

Author: hellwolf

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
           - "8.10.7"
           - "8.8.4"
         cabal:
-          - "3.6"
+          - "3.8"
         os:
           - ubuntu-latest
           - macOS-latest
@@ -105,7 +105,7 @@ jobs:
           - "8.10.7"
           - "8.8.4"
         cabal:
-          - "3.6"
+          - "3.8"
         os:
           - windows-latest
       fail-fast: false