ci: Increase parallel build

Author: jorisv

.github/workflows/macos-linux-conda.yml

@@ -97,12 +97,11 @@ jobs:
         cmake .. \
           -G "Ninja" \
           -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX \
-          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
           -DPYTHON_EXECUTABLE=$(which python3) \
           -DGENERATE_PYTHON_STUBS=ON \
           -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
           -DCMAKE_CXX_FLAGS=${{ matrix.cxx_options }}
-        cmake --build . -j2
+        cmake --build . -j4
         ctest --output-on-failure
         cmake --install .
 

.github/workflows/windows-conda.yml

@@ -70,7 +70,6 @@ jobs:
         cmake ^
           -G "Ninja" ^
           -DCMAKE_INSTALL_PREFIX=%CONDA_PREFIX%\Library ^
-          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache ^
           -DCMAKE_BUILD_TYPE=Release ^
           -DGENERATE_PYTHON_STUBS=ON ^
           -DPYTHON_SITELIB=%CONDA_PREFIX%\Lib\site-packages ^
@@ -79,7 +78,7 @@ jobs:
         if errorlevel 1 exit 1
 
         :: Build
-        cmake --build . -j3
+        cmake --build . -j4
         if errorlevel 1 exit 1
 
         :: Testing