Bump version script can't bump if version is already set

... so we have to change it back to be able to
run version bump script properly.

Author: kdvolder

vscode-extensions/vscode-concourse/package.json

@@ -3,7 +3,7 @@
   "displayName": "Concourse CI Pipeline Editor",
   "description": "Provides validation and content assist for Concourse CI pipeline and task configuration yml files",
   "icon": "icon.png",
-  "version": "1.27.0",
+  "version": "1.26.99",
   "publisher": "Pivotal",
   "repository": {
     "type": "git",