Bump rcssmin from 1.1.2 to 1.2.0

Bumps [rcssmin](https://github.com/ndparker/rcssmin) from 1.1.2 to 1.2.0.
- [Changelog](https://github.com/ndparker/rcssmin/blob/master/CHANGES)
- [Commits](https://github.com/ndparker/rcssmin/compare/1.1.2...1.2.0)

---
updated-dependencies:
- dependency-name: rcssmin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/base.txt

@@ -1,6 +1,6 @@
 python-slugify==8.0.4  # https://github.com/un33k/python-slugify
 Pillow==11.1.0  # https://github.com/python-pillow/Pillow
-rcssmin==1.1.2  # https://github.com/ndparker/rcssmin
+rcssmin==1.2.0  # https://github.com/ndparker/rcssmin
 argon2-cffi==23.1.0  # https://github.com/hynek/argon2_cffi
 whitenoise==6.8.2  # https://github.com/evansd/whitenoise
 redis==5.2.1  # https://github.com/redis/redis-py