Bump electron-builder from 26.0.19 to 26.0.20

Bumps [electron-builder](https://github.com/electron-userland/electron-builder/tree/HEAD/packages/electron-builder) from 26.0.19 to 26.0.20.
- [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/v26.0.20/packages/electron-builder)

---
updated-dependencies:
- dependency-name: electron-builder
  dependency-version: 26.0.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -31,7 +31,7 @@
     "cross-env": "^7.0.3",
     "css-loader": "^1.0.1",
     "electron": "^37.2.6",
-    "electron-builder": "^26.0.19",
+    "electron-builder": "^26.0.20",
     "file-loader": "^6.2.0",
     "postcss": "^8.4.13",
     "postcss-import": "^14.0.0",