[Python-modules-team] Bug#973610: cairosvg: Missing a version of Depends package (python3-cairosvg) in Debian stable with backports

[Kimiaki Kuno]

Package: cairosvg
Version: 2.4.2-1~bpo10+1
Severity: important

Dear Maintainer,

I do the `sudo apt install cairosvg` in Debian stable,
then hit the error as follows:

```
$ sudo apt install cairosvg
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 cairosvg : Depends: python3-cairosvg (= 2.4.2-1~bpo10+1) but it is not
 going to be installed
E: Unable to correct problems, you have held broken packages.
```

Currently in the stable has only a 1.x version of python3-cairosvg,

Could you fix this broken dependency? Thanks.