build(deps-dev): bump webpack from 4.44.1 to 4.44.2 in /addon (#610)

Bumps [webpack](https://github.com/webpack/webpack) from 4.44.1 to 4.44.2.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.44.1...v4.44.2)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

addon/package-lock.json

@@ -12,7 +12,7 @@
     "eslint-plugin-mozilla": "^0.9.0",
     "eslint-plugin-no-unsanitized": "^3.1.2",
     "web-ext": "^5.0.0",
-    "webpack": "^4.44.1",
+    "webpack": "^4.44.2",
     "webpack-cli": "^3.3.12"
   },
   "scripts": {