message of squashed commits (most recent first):
- feat: improve error description when application not found
- fix: do not deploy docs on tags
- fix: replace DescribeMore with Describe
- fix: add () after of merror.(BadRequest|Forbidden|NotFound|Internal|Conflict)
- build: update helm files
- build: update msk-sdk-go, then "make dep"
- docs: update README
- build: update Makefile
- build: update .gitlab-ci.yml