mastodon: bump to v4.5.3, helm chart 6.6.3

mastodon/Chart.yaml

@@ -15,12 +15,12 @@ type: application
 # This is the chart version. This version number should be incremented each time
 # you make changes to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 6.5.4
+version: 6.6.3
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
-appVersion: "v4.4.8"
+appVersion: "v4.5.3"
 
 dependencies:
   - name: elasticsearch
@@ -32,6 +32,6 @@ dependencies:
     repository: oci://registry-1.docker.io/bitnamicharts
     condition: postgresql.enabled
   - name: redis
-    version: 18.16.1
+    version: 22.0.7
     repository: oci://registry-1.docker.io/bitnamicharts
     condition: redis.enabled