Merge pull request #95 from input-output-hk/dependabot/github_actions/actions/cache-4

[CI] Bump actions/cache from 3 to 4

Author: jorisdral

.github/workflows/documentation.yml

@@ -55,7 +55,7 @@ jobs:
       # The last step generates dist-newstyle/cache/plan.json for the cache key.
 
     - name: Cache cabal store
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       env:
         cache-name: ${{ runner.os }}-${{ env.ghc }}-documentation-cabal-store
       with: