message: Update CHANGELOG.md
  Removed OData v4 rlease text from changelog since this is only GA after  is merged.
diff: - Added experimental support for OData V4 enum type. Use the `@sap/cloud-sdk-generator` to generate the type safe client.
  - Include fallback `Edm.Any` for previously unsupported edm types like Edm.Geography.
  Type safety and related features like URI conversion are not supported for the fallback type.
  -- OData v4 is moved from the experimental state to GA.
  ## Improvements
  