update 3.21 hash in docs.yaml

aboudreault · aboudreault · commit 2d77ee850e70 · 2020-01-13T11:19:30.000-05:00
diff --git a/docs.yaml b/docs.yaml
@@ -23,7 +23,7 @@ sections:
       CASS_DRIVER_NO_CYTHON=1 python setup.py build_ext --inplace --force
 versions:
   - name: '3.21'
-    ref: 3aa4de6d
+    ref: 6556dcfa
   - name: '3.20'
     ref: d30d166f
   - name: '3.19'
