chore: bump langflow and langflow-base for 1.3.0 release (#7362)

* ⬆️ (pyproject.toml): update package version to 1.3.0 and langflow-base dependency to 0.3.0
♻️ (LoopTemplate.json): change legacy flag from true to false for ParseData component to align with updated logic and functionality

* uv sync package

* ✅ (frontend/package.json): update version from 1.2.0 to 1.3.0 to reflect the latest changes and improvements in the frontend application.

* 🐛 (LoopTemplate.json): set "legacy" property to true for ParseData component to handle legacy functionality and improve compatibility with older versions.

* ⬆️ (pyproject.toml): upgrade package version from 0.2.0 to 0.3.0

src/frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "langflow",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "private": true,
   "dependencies": {
     "@chakra-ui/number-input": "^2.1.2",