docker-compose.yml invalid due to blank lines

Checking out the repository and running it with docker compose will fail unless the blank lines in docker-compose.yml are removed.
My guess is, that the yaml parser got less tolerant towards invalid syntax.

Command:
$ sudo docker compose -f docker-compose.yml -f docker-compose.nginx.yml up

Running on:

$ cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

$ apt list "docker*"
Auflistung… Fertig
docker-buildx-plugin/bullseye,now 0.10.4-1~debian.11~bullseye amd64  [installiert]
docker-ce-cli/bullseye,now 5:23.0.4-1~debian.11~bullseye amd64  [installiert]
docker-ce-rootless-extras/bullseye,now 5:23.0.4-1~debian.11~bullseye amd64  [Installiert,automatisch]
docker-ce/bullseye,now 5:23.0.4-1~debian.11~bullseye amd64  [installiert]
docker-clean/stable 2.0.4-3 all
docker-compose-plugin/bullseye,now 2.17.2-1~debian.11~bullseye amd64  [installiert]
docker-compose/stable 1.25.0-1 all
docker-doc/stable 20.10.5+dfsg1-1+deb11u2 all
docker-registry/stable 2.7.1+ds2-7+b6 amd64
docker-scan-plugin/bullseye 0.23.0~debian-bullseye amd64
docker.io/stable 20.10.5+dfsg1-1+deb11u2 amd64
docker2aci/stable 0.17.2+dfsg-2.1+b5 amd64
docker/stable 1.5-2 all

Start by reviewing docker-compose.yml and docker-compose.nginx.yml, then run the reported docker compose command on a comparable Docker setup. Verify the blank-line syntax in the compose files and confirm that the command starts successfully without the reported parsing failure.