Update nextcloud-vue requirement from ^0.8.0 to ^0.9.0

Updates the requirements on [nextcloud-vue](https://github.com/nextcloud/nextcloud-vue) to permit the latest version.
- [Release notes](https://github.com/nextcloud/nextcloud-vue/releases)
- [Commits](https://github.com/nextcloud/nextcloud-vue/compare/v0.8.0...v0.9.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -29,7 +29,7 @@
 		"@babel/polyfill": "^7.0.0",
 		"nextcloud-axios": "^0.1.2",
 		"nextcloud-server": "^0.15.9",
-		"nextcloud-vue": "^0.8.0",
+		"nextcloud-vue": "^0.9.0",
 		"vue": "^2.5.16",
 		"vue-click-outside": "^1.0.7",
 		"vue-infinite-loading": "^2.4.1",