Draft: chore: Update GitLab code suggestions icons

⚠ The icon in the status bar looks tiny after updating these so I've marked this MR as draft for now.

Description

This merge request is the result of running the script to update the extension icons. There is no manual editing in this commit. The content of src/assets/icons s synced with the canonical gitlab-org/editor-extensions/gitlab-ide-icons project.

Documentation: https://gitlab.com/gitlab-org/gitlab-vscode-extension/-/blob/main/docs/developer/icons.md

A script generated this code change, so this merge request will merge without a second review.

Screenshots