feat: add workflow_dispatch trigger to terraform.yml

[Copilot]

Issue

The terraform.yml workflow cannot be manually triggered from the GitHub Actions UI.

Solution

Add workflow_dispatch trigger to enable manual execution while preserving automatic runs on pull requests modifying .tf files.

on:
  workflow_dispatch:
  pull_request:
    paths:
      - "**/*.tf"

Checklist

• I have added or updated relevant documentation.
• PR title makes an appropriate release note and follows conventional commits syntax.
• Merge target is the correct branch, and relevant tandem backport PRs opened.

Context

GitHub Actions workflow_dispatch enables manual workflow execution via the Actions tab. No inputs required for this workflow.

Testing Instructions

Navigate to Actions tab → Terraform workflow → "Run workflow" button should be available.

Upgrade Notes

No upgrade actions required.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• canonical-bos01.cdn.snapcraftcontent.com
  • Triggering command: /usr/lib/snapd/snapd /usr/lib/snapd/snapd (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

On terraform.yml, Adjust the workflow so we're able to manually trigger it from the "Actions" tab.

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