pip prod(deps): bump sphinx from 4.3.0 to 4.3.1 (#853)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 4.3.0 to 4.3.1.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/4.x/CHANGES)
- [Commits](sphinx-doc/sphinx@v4.3.0...v4.3.1)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

docs/requirements.txt

@@ -214,9 +214,9 @@ soupsieve==2.3.1 \
     --hash=sha256:1a3cca2617c6b38c0343ed661b1fa5de5637f257d4fe22bd9f1338010a1efefb \
     --hash=sha256:b8d49b1cd4f037c7082a9683dfa1801aa2597fb11c3a1155b7a5b94829b4f1f9
     # via beautifulsoup4
-sphinx==4.3.0 \
-    --hash=sha256:6d051ab6e0d06cba786c4656b0fe67ba259fe058410f49e95bee6e49c4052cbf \
-    --hash=sha256:7e2b30da5f39170efcd95c6270f07669d623c276521fee27ad6c380f49d2bf5b
+sphinx==4.3.1 \
+    --hash=sha256:048dac56039a5713f47a554589dc98a442b39226a2b9ed7f82797fcb2fe9253f \
+    --hash=sha256:32a5b3e9a1b176cc25ed048557d4d3d01af635e6b76c5bc7a43b0a34447fbd45
     # via
     #   -r docs/requirements.in
     #   furo
@@ -254,6 +254,10 @@ tomli==1.2.2 \
     --hash=sha256:c6ce0015eb38820eaf32b5db832dbc26deb3dd427bd5f6556cf0acac2c214fee \
     --hash=sha256:f04066f68f5554911363063a30b108d2b5a5b1a010aa8b6132af78489fe3aade
     # via setuptools-scm
+typing-extensions==4.0.1 \
+    --hash=sha256:4ca091dea149f945ec56afb48dae714f21e8692ef22a395223bcd328961b6a0e \
+    --hash=sha256:7f001e5ac290a0c0401508864c7ec868be4e701886d5b573a9528ed3973d9d3b
+    # via markdown-it-py
 uc-micro-py==1.0.1 \
     --hash=sha256:316cfb8b6862a0f1d03540f0ae6e7b033ff1fa0ddbe60c12cbe0d4cec846a69f \
     --hash=sha256:b7cdf4ea79433043ddfe2c82210208f26f7962c0cfbe3bacb05ee879a7fdb596