check-build-and-verify.sh: handle stderr from sortpom.

Should be in 3e1aaa9 commit.

No functional changes.

[ci skip]

Author: php-coder

src/main/scripts/ci/check-build-and-verify.sh

@@ -123,7 +123,7 @@ if [ "$RUN_ONLY_INTEGRATION_TESTS" = 'no' ]; then
 
 	if [ "$POM_STATUS" != 'skip' ]; then
 		mvn --batch-mode sortpom:verify -Dsort.verifyFail=stop \
-			>pom.log || POM_STATUS=fail
+			>pom.log 2>&1 || POM_STATUS=fail
 	fi
 
 	if [ "$BOOTLINT_STATUS" != 'skip' ]; then