build(deps): bump electron-builder in /src/static/app

Bumps [electron-builder](https://github.com/electron-userland/electron-builder/tree/HEAD/packages/electron-builder) from 26.0.12 to 26.4.0.
- [Release notes](https://github.com/electron-userland/electron-builder/releases)
- [Changelog](https://github.com/electron-userland/electron-builder/blob/master/packages/electron-builder/CHANGELOG.md)
- [Commits](https://github.com/electron-userland/electron-builder/commits/electron-builder@26.4.0/packages/electron-builder)

---
updated-dependencies:
- dependency-name: electron-builder
  dependency-version: 26.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/static/app/package.json

@@ -23,7 +23,7 @@
     "cidr-tools": "^11.0.3",
     "css-color-converter": "^2.0.0",
     "dayjs": "^1.11.19",
-    "electron-builder": "^26.0.12",
+    "electron-builder": "^26.4.0",
     "fuse.js": "^7.0.0",
     "i": "^0.3.7",
     "is-cidr": "^6.0.1",