deps: update acorn to 8.9.0
This is an automated update of acorn to 8.9.0.
CI: https://ci.nodejs.org/job/node-test-pull-request/52293/
CI: https://ci.nodejs.org/job/node-test-pull-request/52396/
CI: https://ci.nodejs.org/job/node-test-pull-request/52429/
CI: https://ci.nodejs.org/job/node-test-pull-request/52463/
CI: https://ci.nodejs.org/job/node-test-pull-request/52549/
CI: https://ci.nodejs.org/job/node-test-pull-request/52553/
Landed in 3dc2b6e7a444