Bump actions/cache from 3 to 4 (#6)

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -21,7 +21,7 @@ jobs:
 
       - name: Load cached Pre-Commit Dependencies
         id: cached-pre-commit-dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pre-commit/
           key: pre-commit-|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}