The unilateral github update from 2.19.1 to 2.20.0 changed the rendering of all markdown code blocks (identifiled with ```cpp header)

The entire code block was rendered as a single string, including the cpp marker) with no line breaks.

for example

foo(a);
bar(b);

is incorrectly rendered by 2.20.0 as "cpp foo(a); bar(b);"

Adding Pygments==2.19.1 to requirements.txt corrects the problem.

See attached files for requirtements.txt and a typical .md file containing a code block.

passing-loop.md
requirements.txt