build(deps-dev): bump @types/mocha from 8.0.3 to 8.0.4

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 8.0.3 to 8.0.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mocha)

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

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "docx",
-  "version": "5.3.0",
+  "version": "5.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -576,9 +576,9 @@
       "dev": true
     },
     "@types/mocha": {
-      "version": "8.0.3",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-8.0.3.tgz",
-      "integrity": "sha512-vyxR57nv8NfcU0GZu8EUXZLTbCMupIUwy95LJ6lllN+JRPG25CwMHoB1q5xKh8YKhQnHYRAn4yW2yuHbf/5xgg==",
+      "version": "8.0.4",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-8.0.4.tgz",
+      "integrity": "sha512-M4BwiTJjHmLq6kjON7ZoI2JMlBvpY3BYSdiP6s/qCT3jb1s9/DeJF0JELpAxiVSIxXDzfNKe+r7yedMIoLbknQ==",
       "dev": true
     },
     "@types/node": {