chore(deps): bump node-webpmux from 3.1.7 to 3.2.1

Bumps [node-webpmux](https://github.com/ApeironTsuka/node-webpmux) from 3.1.7 to 3.2.1.
- [Commits](https://github.com/ApeironTsuka/node-webpmux/commits)

---
updated-dependencies:
- dependency-name: node-webpmux
  dependency-version: 3.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
     "fluent-ffmpeg": "2.1.3",
     "mime": "^3.0.0",
     "node-fetch": "^2.6.9",
-    "node-webpmux": "3.1.7",
+    "node-webpmux": "3.2.1",
     "pg": "^8.11.0",
     "body-parser": "^1.20.2",
     "express": "^4.18.2",