build(deps): bump the production-dependencies group across 1 directory with 4 updates

Bumps the production-dependencies group with 4 updates in the /docs directory: [certifi](https://github.com/certifi/python-certifi), [requests](https://github.com/psf/requests), [snowballstemmer](https://github.com/snowballstem/snowball) and [urllib3](https://github.com/urllib3/urllib3).


Updates `certifi` from 2025.1.31 to 2025.6.15
- [Commits](certifi/python-certifi@2025.01.31...2025.06.15)

Updates `requests` from 2.32.3 to 2.32.4
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.32.3...v2.32.4)

Updates `snowballstemmer` from 2.2.0 to 3.0.1
- [Changelog](https://github.com/snowballstem/snowball/blob/master/NEWS)
- [Commits](snowballstem/snowball@v2.2.0...v3.0.1)

Updates `urllib3` from 2.4.0 to 2.5.0
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.4.0...2.5.0)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2025.6.15
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: requests
  dependency-version: 2.32.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: snowballstemmer
  dependency-version: 3.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production-dependencies
- dependency-name: urllib3
  dependency-version: 2.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -3,7 +3,7 @@ Jinja2==3.1.6
 MarkupSafe==3.0.2
 Pygments==2.19.1
 Sphinx==7.4.7
-certifi==2025.1.31
+certifi==2025.6.15
 chardet==5.2.0
 commonmark==0.9.1
 docutils==0.20.1
@@ -13,8 +13,8 @@ myst-parser==4.0.1
 packaging==25.0
 pyparsing==3.2.3
 pytz==2025.2
-requests==2.32.3
-snowballstemmer==2.2.0
+requests==2.32.4
+snowballstemmer==3.0.1
 sphinx-favicon==1.0.1
 sphinx-rtd-theme==3.0.2
 sphinxcontrib-applehelp==2.0.0
@@ -24,4 +24,4 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==2.0.0
 sphinxcontrib-serializinghtml==2.0.0
 sphinxext-rediraffe==0.2.7
-urllib3==2.4.0
+urllib3==2.5.0