Update scaffolder copier plugin version

Author: abigailalexander

backstage/packages/backend/package.json

@@ -37,7 +37,7 @@
     "@backstage/plugin-search-backend-module-pg": "^0.5.16",
     "@backstage/plugin-search-backend-node": "^1.2.11",
     "@backstage/plugin-techdocs-backend": "^1.9.0",
-    "@diamondlightsource/plugin-scaffolder-backend-module-copier": "^0.3.2",
+    "@diamondlightsource/plugin-scaffolder-backend-module-copier": "^0.3.4",
     "@immobiliarelabs/backstage-plugin-gitlab-backend": "^6.0.0",
     "better-sqlite3": "^9.0.0",
     "dockerode": "^4.0.0",