Bump acorn from 6.3.0 to 6.4.1 in /examples/wasm_header

Bumps [acorn](https://github.com/acornjs/acorn) from 6.3.0 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/6.3.0...6.4.1)

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

examples/wasm_header/package-lock.json

@@ -241,9 +241,9 @@
             }
         },
         "acorn": {
-            "version": "6.3.0",
+            "version": "6.4.1",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.3.0.tgz",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
-            "integrity": "sha512-/czfa8BwS88b9gWQVhc8eknunSA2DoJpJyTQkhheIf5E48u1N0R4q/YxxsAeqRrmK9TQ/uYfgLDfZo91UlANIA==",
+            "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
             "dev": true
         },
         "ajv": {
@@ -440,38 +440,6 @@
             "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
             "dev": true
         },
-        "axios": {
-            "version": "0.19.0",
-            "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
-            "integrity": "sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==",
-            "requires": {
-                "follow-redirects": "1.5.10",
-                "is-buffer": "^2.0.2"
-            },
-            "dependencies": {
-                "debug": {
-                    "version": "3.1.0",
-                    "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-                    "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-                    "requires": {
-                        "ms": "2.0.0"
-                    }
-                },
-                "follow-redirects": {
-                    "version": "1.5.10",
-                    "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
-                    "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
-                    "requires": {
-                        "debug": "=3.1.0"
-                    }
-                },
-                "is-buffer": {
-                    "version": "2.0.4",
-                    "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.4.tgz",
-                    "integrity": "sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A=="
-                }
-            }
-        },
         "balanced-match": {
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -3636,7 +3604,8 @@
         "ms": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-            "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+            "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+            "dev": true
         },
         "multicast-dns": {
             "version": "6.2.3",