Bump actions/cache from 2.1.4 to 3.3.2 (#52)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -16,7 +16,7 @@ jobs:
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: 'latest'
-      - uses: actions/cache@v2.1.4
+      - uses: actions/cache@v3.3.2
         with:
           path: ~/.cabal
           key: cabal--${{ matrix.ghc }}-${{ hashFiles('*/*.cabal') }}