Pass CMAKE_ARGS via step outputs

.github/actions/build-linux/action.yml

@@ -10,6 +10,7 @@ runs:
   using: "composite"
   steps:
     - name: Install Python package
+      id: python_build
       shell: sh
       env:
         DEBUG: 1
@@ -25,7 +26,7 @@ runs:
         fi
         pip install --no-build-isolation -e ".[dev]" -v
         # Pass the CMAKE_ARGS to following steps.
-        echo CMAKE_ARGS="$CMAKE_ARGS" > $GITHUB_ENV
+        echo CMAKE_ARGS="$CMAKE_ARGS" >> $GITHUB_OUTPUT
 
     - name: Generate package stubs
       shell: sh
@@ -36,5 +37,5 @@ runs:
     - name: Build CPP only
       shell: bash
       run: |
-        cmake . -B build -DCMAKE_BUILD_TYPE=Debug ${{ env.CMAKE_ARGS }}
+        cmake . -B build -DCMAKE_BUILD_TYPE=Debug ${{ steps.python_build.outputs.CMAKE_ARGS }}
         cmake --build build -j $(nproc)