chore: update cache version

Author: HardeepAsrani

.github/workflows/test-php.yml

@@ -71,7 +71,7 @@ jobs:
         run: |
           echo "::set-output name=dir::$(composer config cache-files-dir)"
       - name: Setup Composer cache
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}

includes/Importers/Content_Importer.php

@@ -351,7 +351,7 @@ public function setup_masteriyo( $data ) {
 			return;
 		}
 
-		if ( $data['settings'] ) {
+		if ( isset( $data['settings'] ) ) {
 			foreach ( $data['settings'] as $key => $value ) {
 				masteriyo_set_setting( $key, $value );
 			}