chore(deps): update dependency pymdown-extensions to v9.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pymdown-extensions	==9.3 -> ==9.4

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Release Notes

facelessuser/pymdown-extensions

### [`v9.4`](https://togithub.com/facelessuser/pymdown-extensions/releases/9.4) [Compare Source](https://togithub.com/facelessuser/pymdown-extensions/compare/9.3...9.4) #### 9.4 - **NEW**: Highlight: Changes in order to support Pygments 2.12+. If using Pygments and a version less than 2.12 is installed, Highlight will raise an exception.

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Configuration

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Unit Test Results

154 files  ±0  154 suites  ±0   25s :stopwatch: +4s 366 tests ±0  366 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit e87ad305. ± Comparison against base commit 5723320d.

:recycle: This comment has been updated with latest results.