Update snowballstemmer requirement from ~=2.2.0 to ~=3.0.1

Updates the requirements on [snowballstemmer](https://github.com/snowballstem/snowball) to permit the latest version.
- [Changelog](https://github.com/snowballstem/snowball/blob/master/NEWS)
- [Commits](snowballstem/snowball@v2.2.0...v3.0.1)

---
updated-dependencies:
- dependency-name: snowballstemmer
  dependency-version: 3.0.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -19,7 +19,7 @@ python-slugify~=8.0.4
 pytz~=2025.2
 requests~=2.32.3
 six~=1.17.0
-snowballstemmer~=2.2.0
+snowballstemmer~=3.0.1
 soupsieve~=2.7
 Sphinx~=8.2.3
 sphinx-material~=0.0.36