Update run-tests.yml

Author: ZabelTech

.github/workflows/run-tests.yml

@@ -20,19 +20,14 @@ jobs:
     steps:
 
       - name: Check out repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Haskell
         uses: haskell/actions/setup@v1
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: ${{ matrix.cabal }}
 
-      - name: Cache ~/.stack
-        uses: actions/cache@v2.1.6
-        with:
-          key: ${{ matrix.ghc }}-${{ matrix.cabal }}
-
       - name: Versions
         run: |
           ghc --version