Bump pymdown-extensions from 9.5 to 10.0 in /requirements (#229)

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 9.5 to 10.0.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@9.5...10.0)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/docs.txt

@@ -5,7 +5,7 @@
 #    pip-compile --output-file=requirements/docs.txt requirements/docs.in
 #
 black==22.8.0
-    # via -r requirements/docs.in
+    # via -r docs.in
 click==8.1.3
     # via
     #   black
@@ -36,27 +36,27 @@ markupsafe==2.1.1
     #   jinja2
     #   mkdocstrings
 mdx-include==1.4.2
-    # via -r requirements/docs.in
+    # via -r docs.in
 mergedeep==1.3.4
     # via mkdocs
 mkdocs==1.3.1
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   mkdocs-autorefs
     #   mkdocs-material
     #   mkdocs-simple-hooks
     #   mkdocstrings
 mkdocs-autorefs==0.4.1
     # via mkdocstrings
 mkdocs-material==8.4.3
-    # via -r requirements/docs.in
+    # via -r docs.in
 mkdocs-material-extensions==1.0.3
     # via mkdocs-material
 mkdocs-simple-hooks==0.1.5
-    # via -r requirements/docs.in
+    # via -r docs.in
 mkdocstrings[python]==0.19.0
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   mkdocstrings-python
 mkdocstrings-python==0.7.1
     # via mkdocstrings
@@ -70,7 +70,7 @@ platformdirs==2.5.2
     # via black
 pygments==2.13.0
     # via mkdocs-material
-pymdown-extensions==9.5
+pymdown-extensions==10.0
     # via
     #   mkdocs-material
     #   mkdocstrings
@@ -81,15 +81,14 @@ python-dateutil==2.8.2
 pyyaml==6.0
     # via
     #   mkdocs
+    #   pymdown-extensions
     #   pyyaml-env-tag
 pyyaml-env-tag==0.1
     # via mkdocs
 rcslice==1.1.0
     # via mdx-include
 six==1.16.0
     # via python-dateutil
-tomli==2.0.1
-    # via black
 watchdog==2.1.9
     # via mkdocs
 zipp==3.8.1