chore(deps): bump actions/cache from 3 to 4 (#5568)

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

.github/workflows/ccpp.yml

@@ -65,7 +65,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ammaraskar/gcc-problem-matcher@master
       - name: Setup cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.ccache

.github/workflows/compile_docs.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           python-version: '3.10'
       - name: Cache Python packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           # Cache the Python package environment, excluding pip and setuptools installed by setup-python
           path: |
@@ -44,7 +44,7 @@ jobs:
           pip install -r docs/requirements.txt
       - name: Setup Emscripten cache
         id: cache-system-libraries
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{env.EM_CACHE_FOLDER}}
           key: ${{env.EM_VERSION}}-${{ runner.os }}