Update ci/run_conditional_tests.sh

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: parthea

ci/run_conditional_tests.sh

@@ -92,7 +92,7 @@ fi
 
 RETVAL=0
 
-for subdir in ${subdirs[@]}; do
+for subdir in "${subdirs[@]}"; do
     if [ ! -d "${subdir}" ]; then
         echo "Error: Directory '${subdir}' does not exist." >&2
         exit 1