chore(deps): update actions/cache action to v4 (#20)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Cache Mint packages
         id: mint-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /Users/runner/.mint
           key: ${{ runner.os }}-mint-${{ hashFiles('**/Mintfile') }}

.github/workflows/podspec_lint.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache bundler gems
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: vendor/bundle
           key: ${{ runner.os }}-gems-${{ hashFiles('Gemfile.lock') }}