test: add debugging output of curl API request

.gitlab-ci.yml

@@ -43,6 +43,7 @@ benchmarks:detector:pending:
   script:
     - |
       if [ -n "${GITHUB_SHA}" ] ; then
+        echo https://api.github.com/repos/${GITHUB_REPOSITORY}/statuses/${GITHUB_SHA}
         curl \
           -X POST \
           -H "Accept: application/vnd.github+json" \