chore: bump version to 2026.4

Author: nijel

pyproject.toml

@@ -62,7 +62,7 @@ license = "MIT"
 license-files = ["LICENSE"]
 name = "weblate-language-data"
 requires-python = ">=3.11"
-version = "2026.3"
+version = "2026.4"
 
 [project.optional-dependencies]
 django = [