chore: Update Tasks plugin in Tasks-Demo vault to 1.8.1 (#843)

Author: claremacrae

resources/sample_vaults/Tasks-Demo/.obsidian/plugins/obsidian-tasks-plugin/main.js

@@ -1,10 +1,10 @@
 {
   "id": "obsidian-tasks-plugin",
   "name": "Tasks",
-  "version": "1.7.0",
+  "version": "1.8.1",
   "minAppVersion": "0.13.21",
   "description": "Task management for Obsidian",
-  "author": "Martin Schenck",
+  "author": "Martin Schenck and Clare Macrae",
   "authorUrl": "https://github.com/obsidian-tasks-group",
   "isDesktopOnly": false
 }