Security fix: upgrade golang-runtime version

[idogoren]

kind feature

What happened:
This image runs on top of a very old version of golang-runtime (1.13.11) while there are newer versions which include security fixes (1.20)

What you expected to happen:
Upgrade your golang-runtime version to the latest version

How to reproduce it (as minimally and precisely as possible):
Scan your image via blackduck binary analysis and you will see the issues.
See screenshot for more details

Anything else we need to know?:
No