Query contract module (update base)

[td202]

Purpose

Depends on https://github.com/Concordium/concordium-base/pull/511

Changes

• Update the base module dependency.

Checklist

• [X] My code follows the style of this project.
• [X] The code compiles without warnings.
• [X] I have performed a self-review of the changes.
• [X] I have documented my code, in particular the intent of the hard-to-understand areas.
• [ ] (If necessary) I have updated the CHANGELOG.

[abizjak]

@td202 Is there a reason this is not merged yet?