Update test_doc.yml remove python 3.7

Author: brovelli

.github/workflows/test_doc.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
     - name: Checkout 🛎️
@@ -60,4 +60,4 @@ jobs:
           branch: gh-pages
           folder: docs/build/html/
           clean: true
-          ssh-key: ${{ secrets.DEPLOY_KEY }}
+          ssh-key: ${{ secrets.DEPLOY_KEY }}