chore(deps): update ferro-ta requirement from >=1.1.4 to >=1.2.0

Updates the requirements on [ferro-ta](https://github.com/pratikbhadane24/ferro-ta) to permit the latest version.
- [Release notes](https://github.com/pratikbhadane24/ferro-ta/releases)
- [Changelog](https://github.com/pratikbhadane24/ferro-ta/blob/main/CHANGELOG.md)
- [Commits](https://github.com/pratikbhadane24/ferro-ta/compare/v1.1.4...v1.2.0)

---
updated-dependencies:
- dependency-name: ferro-ta
  dependency-version: 1.2.0
  dependency-type: direct:production
...

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

api/requirements.txt

@@ -1,5 +1,5 @@
 # Runtime dependencies for ferro-ta API
-ferro_ta>=1.1.4
+ferro_ta>=1.2.0
 fastapi>=0.110.0
 uvicorn[standard]>=0.49.0
 pydantic>=2.13.4