Fixed various docker vulnerabilities

[applejag]

• I've added a new note in the CHANGELOG.md file, according to docs:
  https://iver-wharf.github.io/#/development/changelogs/writing-changelogs

Summary

• Strip away patch version from docker base images.
• Removed building dependencies make and python. They were introduced pre-GitHub with no comment on why they were needed. The docker build succeeds without them, so gone they go.
• Force update libgcrypt from nginx Docker base image.

Motivation

Resolve vulnerability issues reported by trivy, which is used to scan in both quay.io and harbor.

[fredx30]

If this is merged without the tag changes i think we should have a discussion at the team meeting about manual controll of version updates and the time cost of retaining a high level control.

[applejag]

If this is merged without the tag changes i think we should have a discussion at the team meeting about manual controll of version updates and the time cost of retaining a high level control.

I'll accept your suggestions, but I think it would be good to still have a verbal chat about this. Perhaps on the next bi-weekly meeting?