Electron forge: github publisher doesn't create any release - electron

Question

I created an electron app using yarn create electron-app my-app which I am hosting on github (https://github.com/amblafont/essai-electron). I updated package.json and forge.config.js to add the github publisher. But it doesn't create any new github release.
yarn run publish doesn't throw any error (see the log below), but it doesn't create any release on github. What am I doing wrong?
$ electron-forge publish
✔ Checking your system
✔ Loading configuration
✔ Resolving publish targets
› Publishing to the following targets: github
✔ Running make command
✔ Loading configuration
✔ Resolving make targets
› Making for the following targets: zip
✔ Running package command
✔ Preparing to package application
✔ Running packaging hooks
✔ Running generateAssets hook
✔ Running prePackage hook
✔ Packaging application
✔ Packaging for x64 on linux [1s]
✔ Running postPackage hook
✔ Running preMake hook
✔ Making distributables
✔ Making a zip distributable for linux/x64 [9s]
✔ Running postMake hook
› Artifacts available at: ***/my-app/out/make
✔ Publishing distributables
✔ [publisher-github] Running the publish command
› Uploading distributable (1/1 to v1.0.0)