CI: use GHC 9.4.4

Author: LaurentRDC

.github/workflows/ci.yml

@@ -19,9 +19,9 @@ jobs:
       matrix:
         include:
           - os: "windows-latest"
-            ghc-version: "9.2.4"
+            ghc-version: "9.4.4"
           - os: "ubuntu-latest"
-            ghc-version: "9.2.4"
+            ghc-version: "9.4.4"
           - os: "macos-latest"
             ghc-version: "9.0.1"