CI(collections): properly setup workflow for collections

[testinginprod]

Things need to be done when adding a new module:

• Can you add it to dependabot
• Can you add it in the github workflow test.yml (under submodules)
• Can you create a sonar-project.properties file (like in math) - with project key cosmos-sdk-collections
• Can you add a changelog under collections/CHANGELOG.md
• Can you add it to labeler.yml