build(deps-dev): bump requests from 2.28.2 to 2.31.0 in /requirements

Bumps [requests](https://github.com/psf/requests) from 2.28.2 to 2.31.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.28.2...v2.31.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements/docs.txt

@@ -6,7 +6,7 @@
 #
 alabaster==0.7.12
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   sphinx
 babel==2.12.1
     # via
@@ -26,7 +26,7 @@ imagesize==1.2.0
     # via sphinx
 jinja2==3.1.2
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   sphinx
 markupsafe==2.1.2
     # via jinja2
@@ -37,23 +37,23 @@ pygments==2.14.0
 pyparsing==2.4.7
     # via packaging
 repoze-sphinx-autointerface==0.8
-    # via -r requirements/docs.in
-requests==2.28.2
+    # via -r docs.in
+requests==2.31.0
     # via sphinx
 six==1.14.0
     # via packaging
 snowballstemmer==2.0.0
     # via sphinx
 sphinx==3.0.3
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   repoze-sphinx-autointerface
     #   sphinx-argparse
     #   sphinx-intl
 sphinx-argparse==0.4.0
-    # via -r requirements/docs.in
+    # via -r docs.in
 sphinx-intl==2.0.1
-    # via -r requirements/docs.in
+    # via -r docs.in
 sphinxcontrib-applehelp==1.0.2
     # via sphinx
 sphinxcontrib-devhelp==1.0.2