Bump sphinx from 7.2.6 to 7.3.7 in /requirements (#22166)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.6 to 7.3.7.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](https://github.com/sphinx-doc/sphinx/compare/v7.2.6...v7.3.7)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

requirements/dev.txt

@@ -44,9 +44,9 @@ supervisor==4.2.5 \
     --hash=sha256:2ecaede32fc25af814696374b79e42644ecaba5c09494c51016ffda9602d0f08 \
     --hash=sha256:34761bae1a23c58192281a5115fb07fbf22c9b0133c08166beffc70fed3ebc12
 # Sphinx is required by sphinxcontrib-httpdomain
-Sphinx==7.2.6 \
-    --hash=sha256:1e09160a40b956dc623c910118fa636da93bd3ca0b9876a7b3df90f07d691560 \
-    --hash=sha256:9a5160e1ea90688d5963ba09a2dcd8bdd526620edbb65c328728f1b2228d5ab5
+Sphinx==7.3.7 \
+    --hash=sha256:413f75440be4cacf328f580b4274ada4565fb2187d696a84970c23f77b64d8c3 \
+    --hash=sha256:a4a7db75ed37531c05002d56ed6948d4c42f473a36f46e1382b0bd76ca9627bc
 # alabaster is required by Sphinx
 alabaster==0.7.16 \
     --hash=sha256:75a8b99c28a5dad50dd7f8ccdd447a121ddb3892da9e53d1ca5cca3106d58d65 \