chore(deps): update dependency element-hq/synapse to v1.135.0

| datasource      | package            | from    | to      |
| --------------- | ------------------ | ------- | ------- |
| github-releases | element-hq/synapse | 1.134.0 | 1.135.0 |

CloudronManifest.json

@@ -6,7 +6,7 @@
   "changelog": "file://CHANGELOG.md",
   "tagline": "Secure & decentralized communication",
   "version": "1.115.0",
-  "upstreamVersion": "1.134.0",
+  "upstreamVersion": "1.135.0",
   "healthCheckPath": "/",
   "httpPort": 8008,
   "memoryLimit": 536870912,