deps: update dependency pymdown-extensions to v10.9 (#3626)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Signed-off-by: Moritz Wiesinger <moritz.wiesinger@dynatrace.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Moritz Wiesinger <moritz.wiesinger@dynatrace.com>

requirements.txt

@@ -3,5 +3,5 @@ mkdocs-git-revision-date-localized-plugin==1.2.6
 mkdocs-include-markdown-plugin==6.2.1
 mkdocs-material==9.5.30
 mkdocs-material-extensions==1.3.1
-pymdown-extensions==10.8.1
+pymdown-extensions==10.9
 mkdocs-material[imaging]==9.5.30