Need a method to automatically build Flatpak after a new version is released

[archisman-panigrahi]

Is your feature request related to a problem? Please describe.
Right now, the owner of the flatpak repository (slgobinath) needs to update it every time a new version is released, which is not a very efficient for everyone's time.

Describe the solution you'd like
There must be some GitHub action to automatically build the Flatpak when a new version is released.

Describe alternatives you've considered
N/A

Additional context
These may be relevant https://github.com/marketplace/actions/flatpak-builder and https://github.com/flatpak/flatpak-github-actions