Add changelog for 0.48.0-rc1

CHANGELOG.md

+## 0.48.0-rc1 (2024-12-12)
+
+### Added (1 change)
+
+- [Introduce input to allow Developer role to plan](https://gitlab.com/components/opentofu/-/commit/89f7672cf6ac0735970820c7e5ba37271513b2c5) ([merge request](https://gitlab.com/components/opentofu/-/merge_requests/212))
+
+### Changed (1 change)
+
+- [Pass var file to init](https://gitlab.com/components/opentofu/-/commit/b7538d3d84d9cb2bfcf184032c15928b4d373f53) ([merge request](https://gitlab.com/components/opentofu/-/merge_requests/213))
+
 ## 0.47.0 (2024-12-10)
 
 ### Added (1 change)