Update mkdocs-static-i18n requirement from <1.3,>=1.2.3 to >=1.2.3,<1.4

Updates the requirements on [mkdocs-static-i18n](https://github.com/ultrabug/mkdocs-static-i18n) to permit the latest version.
- [Changelog](https://github.com/ultrabug/mkdocs-static-i18n/blob/main/docs/changelog.md)
- [Commits](ultrabug/mkdocs-static-i18n@1.2.3...1.3.0)

---
updated-dependencies:
- dependency-name: mkdocs-static-i18n
  dependency-version: 1.3.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -79,7 +79,7 @@ doc = [
     "mkdocs >=1.4.2, <2.0.0",
     "mkdocs-material >=9.0.0, <10.0.0",
     "mkdocstrings[python] >=0.19.0, <0.27.0",
-    "mkdocs-static-i18n >=1.2.3, <1.3"
+    "mkdocs-static-i18n >=1.2.3, <1.4"
 ]
 dev = [
     "pre-commit >=2.20.0, <4.1.0",