chore(deps): fix uv resolution failure and widen Dependabot coverage

[liquidz00]

Three changes to .github/dependabot.yml, no other files touched.

1. Ignore setuptools in the uv ecosystem (the actual bug fix)

The weekly uv updater job has been failing since June with dependency_file_not_resolvable:

No solution found when resolving dependencies: your workspace requires common

Failing runs: 27262733701, 27675353361, 28084795393, 32231592436.

Cause: setuptools appears only in [build-system].requires of packages/common/pyproject.toml and packages/jamfy/pyproject.toml. It is not in uv.lock (verified: zero occurrences), so Dependabot's sandbox cannot build the editable workspace member common and the whole job aborts — meaning no Python updates at all, not just the setuptools one.

Ignoring setuptools lets the rest of the group resolve. The build-system pin stays managed by hand.

2. Add the missing terraform ecosystem

terraform/ has a .terraform.lock.hcl and terraform/main.tf pins deploymenttheory/jamfpro at 0.37.0, which Dependabot has never offered to update because the ecosystem was never declared. Added with directory: "/terraform", a weekly schedule, and a terraform-providers group.

3. Group the github-actions ecosystem

It was ungrouped — #20 and #21 were two separate PRs that should have been one. Added patterns: ["*"] to match the style already used by the uv entry.

Deliberately not added

No npm and no docker entries — there is no package.json and no Dockerfile anywhere in this repo.

Verification

• .github/dependabot.yml parses as valid YAML (a malformed file silently disables Dependabot).
• make lint clean; make test 37 passed.
• uv.lock unchanged.

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