tools: patch jinja2 for Python 3.10 compat

PR-URL: #40296
Backport-PR-URL: #40689
Fixes: #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>

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