Update test.yml

change python version

Author: sukunis

.github/workflows/test.yml

@@ -14,10 +14,10 @@ jobs:
     - uses: actions/checkout@v2
 
     # Install dependencies
-    - name: Set up Python 3.7
+    - name: Set up Python 
       uses: actions/setup-python@v1
       with:
-        python-version: 3.7
+        python-version: '3.x'
 
     - name: Install dependencies
       run: |
@@ -28,4 +28,4 @@ jobs:
     - name: Build the book
       run: |
         python scripts/generate_link_lists.py
-        jupyter-book build docs/
+        jupyter-book build docs/