bugfix: use stack-action for caching and setting up haskell toolchain (#46)

Signed-off-by: Tsung-Ju Lii <[email protected]>

Author: usefulalgorithm

.github/workflows/deploy.yaml

@@ -14,16 +14,13 @@ jobs:
     environment: deployment
     steps:
       - uses: actions/checkout@v4
-
-      - uses: haskell-actions/[email protected]
         with:
-          ghc-version: 9.8.4
-          enable-stack: true
-          stack-setup-ghc: true
-
-      - run: |
-          stack build
-          stack exec site build
+          fetch-depth: 2
+      
+      - id: stack
+        uses: freckle/stack-action@v5
+      
+      - run: stack exec site build
 
       - run: |
           if [[ $(git status --porcelain docs/) ]]; then