Update build_docs.yml

.github/workflows/build_docs.yml

@@ -12,10 +12,10 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v3
-    - name: Set up Python 3.10
+    - name: Set up Python 3.12
       uses: actions/setup-python@v4
       with:
-        python-version: "3.10"
+        python-version: "3.12"
     - uses: actions/cache@v2
       with:
         path: |