Update dependency acorn to v8.15.0 (#505)

Author: renovate[bot]

yarn.lock

@@ -6632,7 +6632,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.0.0, acorn@npm:^8.15.0, acorn@npm:^8.5.0, acorn@npm:^8.9.0":
+"acorn@npm:^8.0.0, acorn@npm:^8.11.0, acorn@npm:^8.14.0, acorn@npm:^8.15.0, acorn@npm:^8.5.0, acorn@npm:^8.8.1, acorn@npm:^8.8.2, acorn@npm:^8.9.0":
   version: 8.15.0
   resolution: "acorn@npm:8.15.0"
   bin:
@@ -6641,15 +6641,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.11.0, acorn@npm:^8.14.0, acorn@npm:^8.8.1, acorn@npm:^8.8.2":
-  version: 8.14.1
-  resolution: "acorn@npm:8.14.1"
-  bin:
-    acorn: bin/acorn
-  checksum: 10c0/dbd36c1ed1d2fa3550140000371fcf721578095b18777b85a79df231ca093b08edc6858d75d6e48c73e431c174dcf9214edbd7e6fa5911b93bd8abfa54e47123
-  languageName: node
-  linkType: hard
-
 "agent-base@npm:^7.1.0, agent-base@npm:^7.1.2":
   version: 7.1.3
   resolution: "agent-base@npm:7.1.3"