[INTERNAL] package.json: Add explicit dependency to @ui5/builder
[INTERNAL] package.json: Add explicit dependency to @ui5/builder

The module is now used in the lib/builder/builder.js script

Change-Id: Ib899dc801babf323225b18a0a3339d8d66ec31bf

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5