ci: use TRIVY_MSTEAMS_WEBHOOK for teams uri

[DmitriyLewen]

Description

use TRIVY_MSTEAMS_WEBHOOK for teams uri

Checklist

• I've read the guidelines for contributing to this repository.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[simar7]

LGTM I've removed MS_TEAMS_WEBHOOK_URI