introduced in https://github.com/bitcoin/bitcoin/commit/357ad110548d726021547d85b5b2bfcf3191d7e3
This typo is causing an error in the linter, fixing this should remove this warning
0test/functional/test_runner.py:651: insuffient ==> insufficient
1^ Warning: codespell identified likely spelling errors. Any false positives? Add them to the list of ignored words in test/lint/spelling.ignore-words.txt