Enhance "Check License" workflow's error output

The use of the `error` workflow command will cause the important error message output to be surfaced prominently in the
workflow run summary and log. The workflow run logs can be somewhat labyrinthine to those who don't work with them
regularly, so finding the previous output to determine what caused the failure might have been challenging.

Author: per1234

.github/workflows/check-license.yml

@@ -53,14 +53,14 @@ jobs:
           DETECTED_LICENSE_FILE="$(echo "$LICENSEE_OUTPUT" | jq .matched_files[0].filename | tr --delete '\r')"
           echo "Detected license file: $DETECTED_LICENSE_FILE"
           if [ "$DETECTED_LICENSE_FILE" != "\"${EXPECTED_LICENSE_FILENAME}\"" ]; then
-            echo "ERROR: detected license file doesn't match expected: $EXPECTED_LICENSE_FILENAME"
+            echo "::error file=${DETECTED_LICENSE_FILE}::detected license file $DETECTED_LICENSE_FILE doesn't match expected: $EXPECTED_LICENSE_FILENAME"
             EXIT_STATUS=1
           fi
 
           DETECTED_LICENSE_TYPE="$(echo "$LICENSEE_OUTPUT" | jq .matched_files[0].matched_license | tr --delete '\r')"
           echo "Detected license type: $DETECTED_LICENSE_TYPE"
           if [ "$DETECTED_LICENSE_TYPE" != "\"${EXPECTED_LICENSE_TYPE}\"" ]; then
-            echo "ERROR: detected license type doesn't match expected $EXPECTED_LICENSE_TYPE"
+            echo "::error file=${DETECTED_LICENSE_FILE}::detected license type $DETECTED_LICENSE_TYPE doesn't match expected \"${EXPECTED_LICENSE_TYPE}\""
             EXIT_STATUS=1
           fi