Fix not-reported flaky tests (#22639)

Signed-off-by: Michal Hajas <mhajas@redhat.com>

.github/actions/upload-flaky-tests/action.yml

@@ -17,7 +17,7 @@ runs:
         FLAKES=""
         SEP=""
         for dir in $(find -type d -name 'surefire-reports*'); do
-          for i in $(grep -l '<flakyFailure' $dir/TEST-*.xml); do
+          for i in $(grep -l -E '<flakyFailure|<flakyError' $dir/TEST-*.xml); do
             FLAKES="$FLAKES$SEP$i"
             SEP=$'\n'
           done