Update package.json

Update the version number to 1.18.0

Author: 2TomLi

package.json

@@ -2,7 +2,7 @@
   "name": "sas-lsp",
   "displayName": "SAS",
   "description": "Official SAS Language Extension for VS Code",
-  "version": "1.17.0",
+  "version": "1.18.0",
   "categories": [
     "Programming Languages",
     "Data Science",