Bump version after release (#2099)

Co-authored-by: GitHub <noreply@github.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
     "name": "vscode-cosmosdb",
-    "version": "0.19.3",
+    "version": "0.19.4-alpha.0",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "vscode-cosmosdb",
-            "version": "0.19.3",
+            "version": "0.19.4-alpha.0",
             "license": "SEE LICENSE IN LICENSE.md",
             "dependencies": {
                 "@azure/arm-cosmosdb": "^15.0.0",

package.json

@@ -1,6 +1,6 @@
 {
     "name": "vscode-cosmosdb",
-    "version": "0.19.3",
+    "version": "0.19.4-alpha.0",
     "aiKey": "0c6ae279ed8443289764825290e4f9e2-1a736e7c-1324-4338-be46-fc2a58ae4d14-7255",
     "publisher": "ms-azuretools",
     "displayName": "Azure Databases",