Call acitivate script.

Author: hctorres

.github/workflows/amrex-mini-app-unit-tests-turbo-specific-containers.yaml

@@ -35,6 +35,7 @@ jobs:
         run: |
           gcc --version
           echo "SPACK_ROOT=${SPACK_ROOT}"
+          . /activate.sh
           spack --version
       - name: Modify default CI container environment after checkout
         run: |