hotfix: cache ghcup dir

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

Author: usefulalgorithm

.github/workflows/create_album_post.yaml

@@ -26,6 +26,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: |
+            ~/.ghcup
             ~/.cabal/store
             .github/scripts/pull_album_info/dist-newstyle
           key: haskell-cache-${{ runner.os }}-${{ hashFiles('.github/scripts/pull_album_info/**') }}