chore: Bump version to 0.13.4

chore: Bump version to 0.13.3

ci: Attempt to fix flatpak icon

fix: Out-of-spec GraphQL subscriptions behavior

refactor: Remove unused env variables in a call to nixos-infect

chore: Bump version to 0.12.3 for appimage

chore: Bump version to 0.12.2

chore: Bump version to 0.12.1

ci: Fix environment for the deployment

ci: Fix appimage builds (#488)

Reviewed-on: https://git.selfprivacy.org/SelfPrivacy/selfprivacy.org.app/pulls/488