Bump urllib3 from 1.25.6 to 1.25.7

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.6 to 1.25.7.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/master/CHANGES.rst)
- [Commits](urllib3/urllib3@1.25.6...1.25.7)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements/base.txt

@@ -231,9 +231,9 @@ swagger-spec-validator==2.4.3 \
 tempita==0.5.2 \
     --hash=sha256:cacecf0baa674d356641f1d406b8bff1d756d739c46b869a54de515d08e6fc9c \
     # via sqlalchemy-migrate
-urllib3==1.25.6 \
-    --hash=sha256:3de946ffbed6e6746608990594d08faac602528ac7015ac28d33cee6a45b7398 \
-    --hash=sha256:9a107b99a5393caf59c7aa3c1249c16e6879447533d0887f4336dde834c7be86 \
+urllib3==1.25.7 \
+    --hash=sha256:a8a318824cc77d1fd4b2bec2ded92646630d7fe8619497b142c84a9e6f5a7293 \
+    --hash=sha256:f3c5fd51747d450d4dcf6f923c81f78f811aab8205fda64b0aba34a4e48b0745 \
     # via requests
 uwsgi==2.0.18 \
     --hash=sha256:4972ac538800fb2d421027f49b4a1869b66048839507ccf0aa2fda792d99f583