Install the latest Copilot CLI in the localization workflow

Pinning the CLI to a release would strand the workflow on an old build, and
GITHUB_TOKEN authentication requires a recent version. Install the current
release instead so the job keeps working as the CLI evolves.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: justinyoo

.github/workflows/localization-sync.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Install GitHub Copilot CLI
         if: steps.detect.outputs.changed == 'true'
-        run: npm install --global @github/copilot@1.0.91
+        run: npm install --global @github/copilot
 
       - name: Apply localization skill
         if: steps.detect.outputs.changed == 'true'