Add error handling for GitHub API job URL fetching in build-artifact workflow

[Copilot]

Summary

Addresses review feedback from PR #184 by adding robust error handling to GitHub API calls that fetch job URLs for JFrog artifact metadata. Previously, API failures or invalid responses would silently result in empty job URLs propagating to artifact properties.

Error handling added:

• HTTP status code validation - fails workflow if API returns non-200 response
• Empty/null URL validation - fails workflow if jq cannot extract job URL from response
• Debug output - logs response body when extraction fails for troubleshooting

Affected locations:

• build-external-apps job (lines 309-330) - fetches URL for matrix build jobs
• Push to artifactory job (lines 722-743) - fetches URL for main artifact upload

Both locations now use consistent error handling pattern:

API_RESPONSE=$(curl -s -w "\n%{http_code}" -H "Authorization: Bearer ${{ github.token }}" \
  -H "Accept: application/vnd.github+json" \
  "https://api.github.com/repos/${{ github.repository }}/actions/runs/${{ github.run_id }}/jobs")

HTTP_CODE=$(echo "$API_RESPONSE" | tail -n1)
RESPONSE_BODY=$(echo "$API_RESPONSE" | sed '$d')

if [ "$HTTP_CODE" != "200" ]; then
  echo "❌ ERROR: GitHub API request failed with HTTP code $HTTP_CODE"
  exit 1
fi

JOB_URL=$(echo "$RESPONSE_BODY" | jq -r '.jobs[] | select(.name == "job-name") | .html_url')

if [ -z "$JOB_URL" ] || [ "$JOB_URL" = "null" ]; then
  echo "❌ ERROR: Failed to extract job URL from API response"
  echo "Response body: $RESPONSE_BODY"
  exit 1
fi

TODO

• N/A

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

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