Use towncrier 25.x

Author: dolfinus

.github/dependabot.yml

@@ -20,8 +20,6 @@ updates:
     labels:
       - type:dependency
     ignore:
-      # https://github.com/sphinx-contrib/sphinxcontrib-towncrier/issues/92
-      - dependency-name: towncrier
       # https://github.com/MobileTeleSystems/onetl/pull/297
       - dependency-name: pyspark
         update-types: [version-update:semver-major]