ci(idf): Fix regression

Author: lucasssvaz

.github/scripts/on-push-idf.sh

@@ -26,7 +26,7 @@ for example in $affected_examples; do
         fi
     fi
 
-    idf.py -C "$example_path" set-target "$IDF_TARGET"
+    idf.py --preview -C "$example_path" set-target "$IDF_TARGET"
 
     has_requirements=$(${CHECK_REQUIREMENTS} "$example_path" "$example_path/sdkconfig")
     if [ "$has_requirements" -eq 0 ]; then
@@ -35,5 +35,5 @@ for example in $affected_examples; do
     fi
 
     printf "\n\033[95mBuilding %s\033[0m\n\n" "$example"
-    idf.py -C "$example_path" -DEXTRA_COMPONENT_DIRS="$PWD/components" build
+    idf.py --preview -C "$example_path" -DEXTRA_COMPONENT_DIRS="$PWD/components" build
 done