build(deps): bump sphinx from 7.1.2 to 7.3.5 in /tools/base

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.1.2 to 7.3.5.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.1.2...v7.3.5)

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

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

tools/base/requirements.in

@@ -37,7 +37,7 @@ pyreadline
 pyyaml
 setuptools
 slack_sdk
-sphinx>=7,<7.2
+sphinx>=7,<7.4
 sphinxcontrib-applehelp>=1.0.8
 sphinxcontrib-devhelp>=1.0.6
 sphinxcontrib.googleanalytics

tools/base/requirements.txt

@@ -700,9 +700,7 @@ google-apitools==0.5.32 \
 google-auth[aiohttp]==2.27.0 \
     --hash=sha256:8e4bad367015430ff253fe49d500fdc3396c1a434db5740828c728e45bcce245 \
     --hash=sha256:e863a56ccc2d8efa83df7a80272601e43487fa9a728a376205c86c26aaefa821
-    # via
-    #   google-auth
-    #   gsutil
+    # via gsutil
 google-reauth==0.1.1 \
     --hash=sha256:cb39074488d74c8853074dde47368bbf8f739d4a4338b89aab696c895b6d8368 \
     --hash=sha256:f9f6852a55c2c5453d581cd01f3d1278e86147c03d008409800390a834235892
@@ -1063,7 +1061,6 @@ pyjwt[crypto]==2.8.0 \
     # via
     #   gidgethub
     #   pygithub
-    #   pyjwt
 pylsqpack==0.3.18 \
     --hash=sha256:005ddce84bdcbf5c3cf99f764504208e1aa0a91a8331bf47108f2708f2a315e6 \
     --hash=sha256:06e1bbe47514b83cd03158e5558ef8cc44f578169c1820098be9f3cc4137f16a \
@@ -1232,9 +1229,9 @@ snowballstemmer==2.2.0 \
     --hash=sha256:09b16deb8547d3412ad7b590689584cd0fe25ec8db3be37788be3810cbf19cb1 \
     --hash=sha256:c8e1716e83cc398ae16824e5572ae04e0d9fc2c6b985fb0f900f5f0c96ecba1a
     # via sphinx
-sphinx==7.1.2 \
-    --hash=sha256:780f4d32f1d7d1126576e0e5ecc19dc32ab76cd24e950228dcf7b1f6d3d9e22f \
-    --hash=sha256:d170a81825b2fcacb6dfd5a0d7f578a053e45d3f2b153fecc948c37344eb4cbe
+sphinx==7.3.5 \
+    --hash=sha256:30d03bbaa53b77d38863fd6b95cc4edb4a84a1512787b3b0c12fb3b4fb25d9e9 \
+    --hash=sha256:e6a8f418321429669ef9c1e20c1f294b3fe1f248206b46044c86e1545480687f
     # via
     #   -r requirements.in
     #   envoy-docs-sphinx-runner