[jayjaybunce]

🗣 Description

💭 Motivation and context

A critical PHP vulnerability was discovered, the Matomo ECS tasks have a desired_count of 1 which keeps a container live in perpetuity. This PR effectively prevents further containers from being started automatically by the ECS service.

🧪 Testing

✅ Pre-approval checklist

• This PR has an informative and human-readable title.
• Changes are limited to a single goal - eschew scope creep!
• All future TODOs are captured in issues, which are referenced in code comments.
• All relevant type-of-change labels have been added.
• I have read the CONTRIBUTING document.
• These code changes follow cisagov code standards.
• All relevant repo and/or project documentation has been updated to reflect the changes in this PR.
• Tests have been added and/or modified to cover the changes in this PR.
• AI was used for research and/or understanding purposes while creating this pull request.
• AI was used to generate code in this PR (either fully or in part).
  • I attest that I understand the AI-generated code and its functionality.
  • I am comfortable answering questions about the implementation of the AI-generated code.
• All new and existing tests pass.
• Bump major, minor, patch, pre-release, and/or build versions as appropriate via the bump_version script if this repository is versioned and the changes in this PR warrant a version bump.
• Create a pre-release (necessary if and only if the pre-release version was bumped).

✅ Pre-merge checklist

• Revert dependencies to default branches.
• Finalize version.

✅ Post-merge checklist

• Create a release (necessary if and only if the version was bumped).

[rapidray12]

Simple removal of Matomo from tech stack

[schmelz21]

LGTM