Broken text on the generated PNG badge on Linux

### Environment

- `interrogate` version(s): 1.7.0
- Operating System(s): Ubuntu 24.04
- Python version(s): 3.10.14

### Description of the bug
When generating a badge on Linux, text is broken.

### What you expected to happen
Text should be not broken.

### How to reproduce (as minimally and precisely as possible)
Run interrogate with PNG badge generation on Linux.

### Anything else we need to know?
It's a Cairo bug that hasn't been fixed for 8 years and maybe it will have never been fixed, see
https://gitlab.freedesktop.org/cairo/cairo/-/issues/152
https://github.com/Kozea/CairoSVG/issues/434

The simple workaround has been suggested in https://github.com/Kozea/CairoSVG/issues/434 , which was working for me: deleting `text-rendering="geometricPrecision"` substring from SVG before converting it to PNG helps to fix CairoSVG.

I propose to automate this workaround here. When generating PNG badge, the following steps can be conducted:

1. Generate SVG badge
2. Delete the `text-rendering="geometricPrecision"` substring from the generated SVG
3. Convert SVG to PNG