Update gdsfactory requirement from ~=8.18.0 to >=8.18,<8.28

Updates the requirements on [gdsfactory](https://github.com/gdsfactory/gdsfactory) to permit the latest version.
- [Release notes](https://github.com/gdsfactory/gdsfactory/releases)
- [Changelog](https://github.com/gdsfactory/gdsfactory/blob/main/CHANGELOG.md)
- [Commits](gdsfactory/gdsfactory@v8.18.0...v8.27.0)

---
updated-dependencies:
- dependency-name: gdsfactory
  dependency-type: direct:production
...

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

pyproject.toml

@@ -16,7 +16,7 @@ classifiers = [
   "Operating System :: OS Independent"
 ]
 dependencies = [
-  "gdsfactory~=8.18.0",
+  "gdsfactory>=8.18,<8.28",
   "gplugins[sax]>=1,<2"
 ]
 description = "ubcpdk pdk"