build(deps): bump acorn from 5.7.1 to 5.7.4

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.1 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.1...5.7.4)

---
updated-dependencies:
- dependency-name: acorn
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

package-lock.json

@@ -1212,10 +1212,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.1.tgz",
-      "integrity": "sha512-d+nbxBUGKg7Arpsvbnlq61mc12ek3EY8EQldM3GPAhWJ1UVxC6TDGbIvUMNU6obBX3i1+ptCIzV4vq0gFPEGVQ==",
-      "dev": true
+      "version": "8.8.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.8.1.tgz",
+      "integrity": "sha512-7zFpHzhnqYKrkYdUjF1HI1bzd0VygEGX8lFk4k5zVMqHEoES+P+7TKI+EvLO9WVMJ8eekdO0aDEK044xTXwPPA=="
     },
     "acorn-jsx": {
       "version": "3.0.1",
@@ -1229,7 +1228,7 @@
         "acorn": {
           "version": "3.3.0",
           "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+          "integrity": "sha512-OLUyIIZ7mF5oaAUT1w0TFqQS81q3saT46x8t7ukpPjMNk+nbs4ZHhs7ToV8EWnLYLepjETXd4XaCE4uxkMeqUw==",
           "dev": true
         }
       }
@@ -2041,6 +2040,14 @@
       "requires": {
         "acorn": "^5.5.0",
         "acorn-jsx": "^3.0.0"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "5.7.4",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+          "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
+          "dev": true
+        }
       }
     },
     "esprima": {
@@ -5339,11 +5346,6 @@
         "acorn-walk": "^8.2.0"
       },
       "dependencies": {
-        "acorn": {
-          "version": "8.8.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.8.0.tgz",
-          "integrity": "sha512-QOxyigPVrpZ2GXT+PFyZTl6TtOFc5egxHIP9IlQ+RbupQuX4RkT/Bee4/kQuC02Xkzg84JcT7oLYtDIQxp+v7w=="
-        },
         "acorn-walk": {
           "version": "8.2.0",
           "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.2.0.tgz",