fix(skills/trello): add curl to requires.bins to match body examples (fixes #94727) (#94729)

Summary:
- The PR adds `curl` to the bundled Trello skill's `metadata.openclaw.requires.bins` entry.
- PR surface: Docs 0. Total 0 across 1 file.
- Reproducibility: yes. at source level. Current main and v2026.6.8 declare only `jq` for Trello while the skill body uses `curl`, and the shared requirement evaluator checks only declared bins.

Automerge notes:
- No ClawSweeper repair was needed after automerge opt-in.

Validation:
- ClawSweeper review passed for head 83ae5e8bef.
- Required merge gates passed before the squash merge.

Prepared head SHA: 83ae5e8bef
Review: https://github.com/openclaw/openclaw/pull/94729#issuecomment-4747397470

Co-authored-by: liuhao1024 <sunsky.lau@gmail.com>

skills/trello/SKILL.md

@@ -7,7 +7,7 @@ metadata:
     "openclaw":
       {
         "emoji": "📋",
-        "requires": { "bins": ["jq"], "env": ["TRELLO_API_KEY", "TRELLO_TOKEN"] },
+        "requires": { "bins": ["curl", "jq"], "env": ["TRELLO_API_KEY", "TRELLO_TOKEN"] },
         "install":
           [
             {