build(npm): use correct override for @simpl/brand

We previously just accepted a broad range,
which did not cover `-rc.x` release.
So npm failed when doing a release.
The new override is pointing the local package instead,
which solves the problem.

Author: spike-rabbit

package-lock.json

@@ -193,7 +193,7 @@
       "typescript": "$typescript"
     },
     "@simpl/brand": {
-      "@siemens/element-theme": ">1.0.0"
+      "@siemens/element-theme": "file:projects/element-theme"
     }
   }
 }