build.yml: new GHCs and misc updates

.github/workflows/build.yml

@@ -1,8 +1,8 @@
 # Builds and tests this Haskell project on "GitHub Actions"
 #
-# 2021-2023  Rudy Matela
+# 2021-2024  Rudy Matela
 #
-# some docs: https://github.com/haskell/actions/tree/main/setup
+# some docs: https://github.com/haskell-actions/setup
 #
 # The official haskell docker image: https://hub.docker.com/_/haskell
 name: build
@@ -63,6 +63,8 @@ jobs:
     strategy:
       matrix:
         ghc:
+          - '9.8'
+          - '9.6'
           - '9.4'
           - '9.2'
           - '9.0'
@@ -117,7 +119,7 @@ jobs:
     needs: build-and-test
     steps:
       - name: Setup Haskell's GHC and Cabal as required by current Stackage LTS
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2
         with: # lts-19.19
           ghc-version: '9.0.2'
           cabal-version: '3.4'

express.cabal

@@ -44,7 +44,9 @@ extra-source-files: .gitignore
                   , bench/runtime/zero/bench/*.runtime
                   , bench/runtime/zero/eg/*.runtime
                   , etc/hugs-backports/Data/Function.hs
-tested-with: GHC==9.4
+tested-with: GHC==9.8
+           , GHC==9.6
+           , GHC==9.4
            , GHC==9.2
            , GHC==9.0
            , GHC==8.10