Feat/improve text rendering

[FranzDiebold]

Hi, first of all: Thanks for this GitHub Action! 👍

I had some issues with wrong text rendering and found the following resources that improve the text rendering:

• https://github.com/puppeteer/puppeteer/issues/2410
• https://docs.browserless.io/blog/2020/09/30/puppeteer-print.html

I applied the changes accordingly. 😉