This change fixes the format check in GitHub actions ran by `clang-format`.

Dockerfile

```dockerfile
FROM ubuntu:20.04

ENV DEBIAN_FRONTEND=noninteractive

RUN set -ex; \
apt-get update; \
apt-get install -y build-essential meson appstream clang clang-format clang-tools libdbus-1-dev libinih-dev libsystemd-dev git

RUN set -ex; \
yes | adduser ci-user

USER ci-user
```

Environment setup

```bash
sudo su -g docker $USER
docker build -t ci .
```

clang-format fix

```bash
docker run -e CI=true --rm -v "$PWD:$PWD" -w "$PWD" --init ci ./scripts/format-check.sh
```