chore: add setup buildx to tag and release flow (#112)

## Description

This adds the buildx setup action to tag and release

## Related Issue

Fixes #N/A

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [X] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/uds-package-mattermost/blob/main/CONTRIBUTING.md#developer-workflow)
followed

Author: Racer159

.github/workflows/tag-and-release.yaml

@@ -49,6 +49,8 @@ jobs:
           registry1Password: ${{ secrets.IRON_BANK_ROBOT_PASSWORD }}
           ghToken: ${{ secrets.GITHUB_TOKEN }}
 
+      - uses: docker/setup-buildx-action@aa33708b10e362ff993539393ff100fa93ed6a27 # v3.5.0
+
       - name: Build Package
         run: uds run -f tasks/publish.yaml build-package --set FLAVOR=${{ matrix.flavor }} --no-progress