fix usebruno/burno#1357: access home filesystem

[bastian-src]

On a new flathub-based installation, the user cannot create new collections in their home directory. Therefore, adding the permission here.

Compare

• https://github.com/usebruno/bruno/issues/1357
• https://docs.flatpak.org/en/latest/sandbox-permissions.html

[flathubbot]

Started test build 108055

[flathubbot]

Build 108055 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/90872/com.usebruno.Bruno.flatpakref

[flathubbot]

Started test build 109126

[flathubbot]

Build 109126 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/91953/com.usebruno.Bruno.flatpakref

[bastian-src]

@helloanoop thanks for merging!! :grin: