fix(helm): change strategy to Recreate (#3325)

Current dendrite needs an PVC and replica of 1 is forced, so best way of
update and change of configuration is to stop and start (instatt of
start multiple dendrite pod with deadlock of binding pvc)

see: #3258

### Pull Request Checklist

<!-- Please read
https://matrix-org.github.io/dendrite/development/contributing before
submitting your pull request -->

* [x] I have added Go unit tests or [Complement integration
tests](https://github.com/matrix-org/complement) for this PR _or_ I have
justified why this PR doesn't need tests
* [x] Pull request includes a [sign off below using a legally
identifiable
name](https://matrix-org.github.io/dendrite/development/contributing#sign-off)
_or_ I have already signed off privately

 Signed-off-by: `Your Name <your@email.example.org>`
 - [x] version bump of helm Chart

Signed-off-by: WrenIX <dev.github@wrenix.eu>

[skip ci]

helm/dendrite/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: dendrite
-version: "0.13.7"
+version: "0.13.8"
 appVersion: "0.13.6"
 description: Dendrite Matrix Homeserver
 type: application

helm/dendrite/values.yaml

@@ -92,7 +92,7 @@ extraVolumeMounts: []
 strategy:
   # -- Strategy to use for rolling updates (e.g. Recreate, RollingUpdate)
   # If you are using ReadWriteOnce volumes, you should probably use Recreate
-  type: RollingUpdate
+  type: Recreate
   rollingUpdate:
     # -- Maximum number of pods that can be unavailable during the update process
     maxUnavailable: 25%