Update MDB version to 4.12.0 and Bootstrap to 4.4.1 in Free template

Author: Mateusz Łubianka

snippets/free-template.json

@@ -14,9 +14,9 @@
             "       <!-- Google Fonts Roboto -->",
             "       <link rel=\"stylesheet\" href=\"https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap\">",
             "       <!-- Bootstrap core CSS -->",
-            "       <link href=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css\" rel=\"stylesheet\">",
+            "       <link href=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/css/bootstrap.min.css\" rel=\"stylesheet\">",
             "       <!-- Material Design Bootstrap -->",
-            "       <link href=\"https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.10.1/css/mdb.min.css\" rel=\"stylesheet\">",
+            "       <link href=\"https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.12.0/css/mdb.min.css\" rel=\"stylesheet\">",
             "       <!-- Your custom styles (optional) -->",
             "       <link rel=\"stylesheet\" href=\"css/style.css\">",
             "   </head>",
@@ -31,9 +31,9 @@
             "       <!-- Bootstrap tooltips -->",
             "       <script type=\"text/javascript\" src=\"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.4/umd/popper.min.js\"></script>",
             "       <!-- Bootstrap core JavaScript -->",
-            "       <script type=\"text/javascript\" src=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js\"></script>",
+            "       <script type=\"text/javascript\" src=\"https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/js/bootstrap.min.js\"></script>",
             "       <!-- MDB core JavaScript -->",
-            "       <script type=\"text/javascript\" src=\"https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.10.1/js/mdb.min.js\"></script>",
+            "       <script type=\"text/javascript\" src=\"https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.12.0/js/mdb.min.js\"></script>",
             "       <!-- Your custom scripts (optional) -->",
             "       <script type=\"text/javascript\">",
             "       </script>",