Update cmake-multi-platform.yml

.github/workflows/cmake-multi-platform.yml

@@ -41,10 +41,19 @@ jobs:
         echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
     
     - uses: turtlebrowser/[email protected]
+
     - name: Create default conan profile
       run: conan profile detect --force
+
     - name: Conan install
       run: conan install conanfile.py --build=missing -s compiler.cppstd=20 -s build_type=${{ matrix.build_type }} -s compiler=${{ matrix.cc }}
+
+    - uses: actions/[email protected]
+      id: cache-conan
+      with: 
+        key: ${{ matrix.os}}-${{ matrix.build_type }}-${{ matrix.cc }}
+        path: ~/.conan2
+
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
@@ -53,7 +62,7 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.cc }}
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
         -S ${{ github.workspace }}
-
+        
     - name: Build
       # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
       run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}