ci: handle the wheel deps bits as well

Author: cpcloud

ci/test_wheel_deps_wheels.sh

@@ -11,7 +11,7 @@ rapids-logger "Install wheel with test dependencies"
 package=$(realpath wheel/numba_cuda*.whl)
 echo "Package path: ${package}"
 # TODO: control minor version pinning to honor TEST_MATRIX once the cuda-toolkit metapackage is up
-python -m pip install "${package}[cu${CUDA_VER_MAJOR},test-cu${CUDA_VER_MAJOR}]"
+python -m pip install "${package}[cu${CUDA_VER_MAJOR}]" --group "test-cu${CUDA_VER_MAJOR}"
 
 rapids-logger "Build test binaries"