Bust CI cache.

There are some problems with GHC-9.0. Something happened and lnker fails with
weird errors.

Author: Shimuuar

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
       name: Cache ~/.cabal/store
       with:
         path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
-        key: ${{ runner.os }}-${{ matrix.ghc }}---CACHE_V3
+        key: ${{ runner.os }}-${{ matrix.ghc }}-CACHE_V4
     # ----------------
     - name: "Install PAPI"
       run: |