Normalize CI/CD workflows

[schmidtw]

Workflow Gaps

The following CI/CD workflows do not match the xmidt-org Ideal State.

Missing or misconfigured workflows

• dependabot-approver.yml — should be renamed to approve-dependabot.yml per standard naming
• proj-xmidt-team.yml — references xmidt-org/shared-go/.github/workflows/proj.yml but should reference proj-xmidt-team.yml

Missing or incorrect permissions blocks

• proj-xmidt-team.yml — missing contents: read permission (currently only has issues: write and pull-requests: write)

Reference

• Reference repos: xmidt-org/wrpssp, xmidt-org/wrp-go