tools: patch jinja2 for Python 3.10 compat

PR-URL: #40296
Backport-PR-URL: #40689
Fixes: #40294
Reviewed-By: Jiawen Geng <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Christian Clauss <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>

tools/inspector_protocol/jinja2/tests.py

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