ci: Set custom release suffix for Packit

[vojtechtrefny]

We want a high release number (99) for the daily builds done by Packit to make sure the Copr daily builds are always newer than the version in Fedora. We can do this in Packit config instead of bumping the release in the spec everytime.

[packit-as-a-service]

Failed to load packit config file:

Cannot parse package config. ValidationError({'jobs': {0: {'packages': defaultdict(<class 'dict'>, {'blivet-gui': {'value': {'fix-spec-file': ['Unknown field.']}}})}, 1: {'packages': defaultdict(<class 'dict'>, {'blivet-gui': {'value': {'fix-spec-file': ['Unknown field.']}}})}}})

For more info, please check out the documentation or contact the Packit team.

[packit-as-a-service]

Failed to load packit config file:

Cannot parse package config. ValidationError({'jobs': {0: {'packages': defaultdict(<class 'dict'>, {'blivet-gui': {'value': {'actions': ['Field may not be null.']}}})}}})

For more info, please check out the documentation or contact the Packit team.