fix: use node 14 explicitly (#386)

* fix: use node 14 explicitly

* chore: string not number

* chore: use default node v

* chore: use maintenance node v

Author: WillieRuemmele

.circleci/config.yml

@@ -75,7 +75,7 @@ workflows:
       - release-management/release-package:
           sign: true
           github-release: true
-          node_version: lts
+          node_version: maintenance
           requires:
             - release-management/test-package
           filters: