chore(deps): update dependency tootsuite/mastodon to v4.6.3

| datasource      | package            | from  | to    |
| --------------- | ------------------ | ----- | ----- |
| github-releases | tootsuite/mastodon | 4.6.2 | 4.6.3 |

CloudronManifest.json

@@ -6,7 +6,7 @@
   "changelog": "file://CHANGELOG",
   "tagline": "Federated social network",
   "version": "1.18.2",
-  "upstreamVersion": "4.6.2",
+  "upstreamVersion": "4.6.3",
   "healthCheckPath": "/about",
   "httpPort": 8000,
   "memoryLimit": 1610612736,

Dockerfile

@@ -68,7 +68,7 @@ RUN mkdir -p /app/code /app/pkg
 WORKDIR /app/code
 
 # renovate: datasource=github-releases depName=tootsuite/mastodon versioning=semver extractVersion=^v(?<version>.+)$
-ARG MASTODON_VERSION=4.6.2
+ARG MASTODON_VERSION=4.6.3
 
 ENV RAILS_ENV production
 ENV NODE_ENV production