build(deps): bump postprocessing from 6.39.3 to 6.39.4 (#77)

Bumps [postprocessing](https://github.com/pmndrs/postprocessing) from 6.39.3 to 6.39.4.
- [Release notes](https://github.com/pmndrs/postprocessing/releases)
- [Commits](pmndrs/postprocessing@v6.39.3...v6.39.4)

---
updated-dependencies:
- dependency-name: postprocessing
  dependency-version: 6.39.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

apps/web/package.json

@@ -18,7 +18,7 @@
     "next": "^16.3.0",
     "ogl": "^1.0.11",
     "postcss": "^8.5.10",
-    "postprocessing": "^6.39.3",
+    "postprocessing": "^6.39.4",
     "react": "^19.2.8",
     "react-dom": "^19.2.8",
     "recharts": "^3.9.2",