deps: V8: patch jinja2 for Python 3.10 compat

PR-URL: https://github.com/nodejs/node/pull/40296
Fixes: https://github.com/nodejs/node/issues/40294
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Christian Clauss <cclauss@me.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

common.gypi

@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.11',
+    'v8_embedder_string': '-node.12',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/third_party/jinja2/tests.py

@@ -10,7 +10,7 @@
 """
 import operator
 import re
-from collections import Mapping
+from collections.abc import Mapping
 from jinja2.runtime import Undefined
 from jinja2._compat import text_type, string_types, integer_types
 import decimal