Bump pyicu from 2.15 to 2.15.1

Bumps [pyicu](https://gitlab.pyicu.org/main/pyicu) from 2.15 to 2.15.1.

---
updated-dependencies:
- dependency-name: pyicu
  dependency-version: 2.15.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docker_requirements.txt

@@ -19,7 +19,7 @@ pandas==2.2.*
 panphon==0.21.2
 phunspell==0.1.6
 protobuf==5.29.3
-pyicu==2.15
+pyicu==2.15.1
 python-crfsuite==0.9.11
 requests==2.32.*
 sacremoses==0.1.1