[BUG] Multiple samples not regenerated after 4.1.2 release

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
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Description

Go sample (and others) wasn't regenerated after the 4.1.2 release. Seems there's something missing in automation. See https://openapi-generator.slack.com/archives/CLSB0U0R5/p1569625581055100

openapi-generator version

4.1.3-SNAPSHOT

Suggest a fix

Investigate build scripts and update accordingly.