Bump pyicu from 2.12 to 2.13.1

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

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

requirements.txt

@@ -6,7 +6,7 @@ followthemoney-store[postgresql]==3.0.6
 servicelayer[google,amazon]==1.22.2
 languagecodes==1.1.1
 countrytagger==0.1.2
-pyicu==2.12
+pyicu==2.13.1
 google-cloud-vision==3.7.2
 tesserocr==2.6.2
 spacy==3.6.1