Enable ccache explicitly for builds #9359

Since it's now off by default

.github/workflows/ci-ifcopenshell-docker.yml

@@ -44,6 +44,7 @@ jobs:
         cmake \
          -DCMAKE_INSTALL_PREFIX=$PWD/install/ \
          -DCMAKE_BUILD_TYPE=Release \
+         -DUSE_CCACHE=ON \
          -DCMAKE_PREFIX_PATH=/usr \
          -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
          -DBUILD_PACKAGE=On \

.github/workflows/ci.yml

@@ -185,6 +185,7 @@ jobs:
                -DPYTHON_EXECUTABLE:FILEPATH=${{ env.pythonLocation }}/bin/python \
                -DPYTHON_INCLUDE_DIR:PATH=${{ env.pythonLocation }}/include/python3.11 \
                -DUSE_MMAP=On \
+               -DUSE_CCACHE=ON \
                -DBUILD_SHARED_LIBS=${{ matrix.build_shared_libs }} \
                "-DSCHEMA_VERSIONS=2x3;4;4x3_add2" \
                -DGLTF_SUPPORT=On \