chore: incrementing version number - v2.4.0

(cherry picked from commit 5525442279)
Signed-off-by: Misty Release Bot <deploy@nodebb.org>

install/package.json

@@ -2,7 +2,7 @@
     "name": "nodebb",
     "license": "GPL-3.0",
     "description": "NodeBB Forum",
-    "version": "2.3.1",
+    "version": "2.4.0",
     "homepage": "http://www.nodebb.org",
     "repository": {
         "type": "git",
@@ -29,7 +29,7 @@
     },
     "dependencies": {
         "@adactive/bootstrap-tagsinput": "0.8.2",
-		"@isaacs/ttlcache": "^1.2.0",
+        "@isaacs/ttlcache": "^1.2.0",
         "ace-builds": "1.8.1",
         "archiver": "5.3.1",
         "async": "3.2.4",