CI: Use new syntax for setting github output (#15415)

Use new syntax for setting github output

Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com>

.github/workflows/ci-app-examples.yml

@@ -59,12 +59,9 @@ jobs:
         if: ${{ matrix.requires == 'oldest' }}
         run: python .actions/assistant.py replace_oldest_ver
 
-      # Note: This uses an internal pip API and may not always work
-      # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
-      - name: Get pip cache
+      - name: Get pip cache dir
         id: pip-cache
-        run: |
-          python -c "from pip._internal.locations import USER_CACHE_DIR; print('::set-output name=dir::' + USER_CACHE_DIR)"
+        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
       - name: Cache pip
         uses: actions/cache@v3

.github/workflows/ci-app-tests.yml

@@ -62,10 +62,9 @@ jobs:
         if: ${{ matrix.requires == 'oldest' }}
         run: python .actions/assistant.py replace_oldest_ver
 
-      - name: Get pip cache
+      - name: Get pip cache dir
         id: pip-cache
-        run: |
-          python -c "from pip._internal.locations import USER_CACHE_DIR; print('::set-output name=dir::' + USER_CACHE_DIR)"
+        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
       - name: Cache pip
         uses: actions/cache@v3

.github/workflows/ci-lite-tests.yml

@@ -91,11 +91,9 @@ jobs:
         python ./requirements/pytorch/adjust-versions.py requirements/lite/base.txt ${{ matrix.pytorch-version }}
         cat requirements/lite/base.txt
 
-    # Note: This uses an internal pip API and may not always work
-    # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
     - name: Get pip cache dir
       id: pip-cache
-      run: echo "::set-output name=dir::$(pip cache dir)"
+      run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: pip cache
       uses: actions/cache@v3

.github/workflows/ci-pytorch-tests.yml

@@ -116,7 +116,7 @@ jobs:
 
     - name: Get pip cache dir
       id: pip-cache
-      run: echo "::set-output name=dir::$(pip cache dir)"
+      run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: pip cache
       uses: actions/cache@v3

.github/workflows/release-docker.yml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Get release version
         id: get_version
-        run: echo "::set-output name=RELEASE_VERSION::$(echo ${GITHUB_REF##*/})"
+        run: echo "RELEASE_VERSION=$(echo ${GITHUB_REF##*/})" >> $GITHUB_OUTPUT
 
       - name: Publish Releases to Docker
         uses: docker/build-push-action@v3

src/lightning_app/cli/component-template/.github/workflows/ci-testing.yml

@@ -34,12 +34,9 @@ jobs:
       run: |
         brew install libomp  # https://github.com/pytorch/pytorch/issues/20030
 
-    # Note: This uses an internal pip API and may not always work
-    # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
-    - name: Get pip cache
+    - name: Get pip cache dir
       id: pip-cache
-      run: |
-        python -c "from pip._internal.locations import USER_CACHE_DIR; print('::set-output name=dir::' + USER_CACHE_DIR)"
+      run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: Cache pip
       uses: actions/cache@v2