Update config.yml

Author: tsalo

.circleci/config.yml

@@ -5,6 +5,14 @@ jobs:
     machine:
       image: ubuntu-2004:202201-02
     working_directory: /home/circleci/src/CuBIDS
+    # Define the matrix for Python versions
+    matrix:
+      parameters:
+        python_version:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+          - "3.11"
     steps:
       - checkout:
           path: /home/circleci/src/CuBIDS
@@ -21,7 +29,7 @@ jobs:
             conda info -a
 
             export PATH=/tmp/miniconda/bin:$PATH
-            conda create -n cubids python=<< matrix.python_version >> pip
+            conda create -n cubids python=<< parameters.python_version >> pip
             source activate cubids
             conda install -c conda-forge -y datalad
 
@@ -63,13 +71,6 @@ workflows:
   build_test_deploy:
     jobs:
       - run_pytests:
-          # Define the matrix for Python versions
-          matrix:
-            python_version:
-              - "3.8"
-              - "3.9"
-              - "3.10"
-              - "3.11"
           filters:
             tags:
               only: /.*/