show update core button in table

[Mips2648]

Description

This will display the "update core" button in the table if there are core update available.
The action on the button is exactly the same than the top right button

Goal is to reduce number of question of people that does not find the button in the top right corner.

Suggested changelog entry

Add update core button in the list of update

Related issues/external references

Types of changes

• Bug fix (non-breaking change which fixes)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
  • This change is only breaking for integrators, not for external standards or end-users.
• Documentation improvement

PR checklist

• I have checked there is no other PR open for the same change.
• I have read the [La ligne directrice pour contribuer à ce projet / Contribution guidelines for this project).
• I grant the project the right to include and distribute the code under the GNU.
• I have added tests to cover my changes.
• I have verified that the code complies with the projects coding standards.
• [Required for new sniffs] I have added MD documentation for the sniff.