Update ci-testing.yml (#11154)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

.github/workflows/ci-testing.yml

@@ -25,16 +25,7 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Get cache dir  # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
-        id: pip-cache
-        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-        shell: bash  # for Windows compatibility
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key: ${{ runner.os }}-${{ matrix.python-version }}-pip-${{ hashFiles('requirements.txt') }}
-          restore-keys: ${{ runner.os }}-${{ matrix.python-version }}-pip-
+          cache: 'pip' # caching pip dependencies
       - name: Install requirements
         run: |
           python -m pip install --upgrade pip wheel
@@ -83,16 +74,7 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Get cache dir  # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
-        id: pip-cache
-        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-        shell: bash  # for Windows compatibility
-      - name: Cache pip
-        uses: actions/cache@v3
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key: ${{ runner.os }}-${{ matrix.python-version }}-pip-${{ hashFiles('requirements.txt') }}
-          restore-keys: ${{ runner.os }}-${{ matrix.python-version }}-pip-
+          cache: 'pip' # caching pip dependencies
       - name: Install requirements
         run: |
           python -m pip install --upgrade pip wheel