chore(release): bump version to v1.5.0

package.json

 {
   "name": "@d-ptb/dcc-js",
-  "version": "1.4.3",
+  "version": "1.5.0",
   "license": "EUPL-1.2",
   "contributors": [
     "Jan Loewe <jan.loewe@ptb.de>",