fix(adapter-commons): multiple issues in adapter-commons

[TheNoim]

Summary

(If you have not already please refer to the contributing guideline as described here)

• [X] Tell us about the problem your pull request is solving.
• [X] Are there any open issues that are related to this? No
• [X] Is this PR dependent on PRs in other repos? No

If so, please mention them to keep the conversations linked together.

Other Information

This PR solves the following issues:

• Usage of double Partial which results in the type Partial<Partial<T>>
• Corrects return of $find in the test fixture of adapter-commons
• Corrects return of $update in the test fixture of adapter-commons
• Changes never[] to any[] in service.test.ts of adapter-commons to prevent type error

Feedback

It is hard to find the contributing.md file. I suggest adding a link in the README.md for better visibility.

[netlify[bot]]

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