Add the missing type specifier

Without it, the generated changelog was wrong like below:

```
node-accepts (1.3.7-1{local_suffix}0) apertis; urgency=medium

  * Sync from Debian debian/bullseye.

 -- Apertis CI <devel@lists.apertis.org>  Wed, 10 Mar 2021 14:56:51 +0000
```

Signed-off-by: Ritesh Raj Sarraf <ritesh.sarraf@collabora.com>