ci: only run macos on 9.8

Everything else seems to fail

Author: TeofilC

.github/workflows/ci.yml

@@ -20,7 +20,10 @@ jobs:
           - "3.12.1.0"
         os:
           - ubuntu-latest
-          - macOS-latest
+        include:
+          - os: macos-latest
+            ghc: "9.8.2"
+            cabal: "3.12.1.0"
       fail-fast: false
     steps:
       - uses: actions/checkout@v2