Update versions for 1.18 (#10127)

* update versions for 1.18

* update install links

* update changelog

extensions/agent/package.json

@@ -2,7 +2,7 @@
   "name": "agent",
   "displayName": "SQL Server Agent",
   "description": "Manage and troubleshoot SQL Server Agent jobs",
-  "version": "0.47.0",
+  "version": "0.48.0",
   "publisher": "Microsoft",
   "preview": true,
   "license": "https://raw.githubusercontent.com/Microsoft/azuredatastudio/master/LICENSE.txt",

extensions/dacpac/package.json

@@ -2,7 +2,7 @@
   "name": "dacpac",
   "displayName": "SQL Server Dacpac",
   "description": "SQL Server Dacpac for Azure Data Studio.",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "publisher": "Microsoft",
   "preview": false,
   "engines": {

extensions/schema-compare/package.json

@@ -2,7 +2,7 @@
   "name": "schema-compare",
   "displayName": "%displayName%",
   "description": "%description%",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "publisher": "Microsoft",
   "preview": false,
   "engines": {