windows fix path

Author: cvanelteren

.github/workflows/build.yml

@@ -86,7 +86,8 @@ jobs:
           CIBW_SKIP: "pp* *-musllinux_* *-win32 *-manylinux_i686 *-musllinux_i686 *-aarch64 *-armv7l"
           CIBW_BEFORE_ALL: ${{ matrix.before_all }}
           CIBW_TEST_REQUIRES: pytest
-          CIBW_TEST_COMMAND: "cd {project} && pytest"
+          CIBW_TEST_COMMAND: "cd {project}/packages/basemap && pytest"
+          CIBW_TEST_COMMAND_WINDOWS: "dir {project}/packages/basemap && pytest"
           CIBW_ENVIRONMENT: >-
             GEOS_VERSION="3.6.5"
             GEOS_DIR="$(pwd)/extern"