chore: do not include v in tags generated by release please (#269)

Author: jokerttu

release-please-config.json

@@ -2,6 +2,7 @@
   "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
   "release-type": "dart",
   "include-component-in-tag": false,
+  "include-v-in-tag": false,
   "bump-minor-pre-major": true,
   "packages": {
     ".": {