'async' is a reserved word in Python >= 3.7

[cclauss]

$ python3.7 ./configure.py ; NODE=$(which node) make test # generates -->

Failed to parse config file: Type names and field names cannot be a keyword: 'async'

That message is generated in inspector_protocol/code_generator.py because 'async' is a Python keyword in Python >= 3.7 and deps/v8/src/inspector/inspector_protocol_config.json contains async as a dict key.

UPDATE: This is now fixed in upstream https://chromium-review.googlesource.com/c/deps/inspector_protocol/+/1781351 and now needs to be downstreamed.

[bnoordhuis]

#29340