Restrict jinja to py 3.10 or less (#1345)

Author: atalman

conda/pytorch-nightly/meta.yaml

@@ -46,7 +46,7 @@ requirements:
     - sympy
     - filelock
     - networkx
-    - jinja2
+    - jinja2 # [py <= 310]
     {% if cross_compile_arm64 == 0 %}
     - blas * mkl
     {% endif %}