fix(action): artifact is gzip compressed

This is not reported to cURL however T-T

action.yml

@@ -79,15 +79,22 @@ runs:
         }
         # USAGE: has_report <RUN_URL>
         has_report() {
-          http_code=$(curl -X 'GET' -o /dev/null --silent -Iw '%{http_code}' "$1/artifacts/$ARTIFACT_NAME")
+          http_code=$(curl -X 'GET' -o /dev/null --silent -Iw '%{http_code}' \
+            -H "Authorization: token $GITHUB_TOKEN" \
+            "$1/artifacts/$ARTIFACT_NAME")
           test "$http_code" = '200'
         }
 
         # If we have a previous report compare against it
         if [ "$JOB_NAME" ] && [ "$HEAD_BRANCH" ]; then
           url=$(base_report_url)
+          echo "Found previous run at: $url"
           if has_report "$url"; then
-            curl -X 'GET' -o old-report.json "$url/artifacts/$ARTIFACT_NAME"
+            curl -X 'GET' \
+              -H "Authorization: token $GITHUB_TOKEN" \
+              "$url/artifacts/$ARTIFACT_NAME" |
+              gunzip > old-report.json
+            echo 'Found previous report'
             "$GITHUB_ACTION_PATH/comment_on_pr.sh" report.json old-report.json
             exit 0
           fi