[helm] Update postgresql chart to 14.2.3 (#3292)

This change introduces a major Postgresql upgrade
(from 15.1.0 to 16.1.0).

From

https://artifacthub.io/packages/helm/bitnami/postgresql/13.2.24#to-13-0-0:

This major version changes the default PostgreSQL image from 15.x to
16.x. Follow the [official
instructions](https://www.postgresql.org/docs/15/upgrading.html) to
upgrade to 16.x.

### 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

This PR doesn't need a Go unit tests since it doesn't touch any code,
only the helm chart is affected.

Signed-off-by: Varac Anero <varac@varac.net>

---------

Signed-off-by: Varac Anero <varac@varac.net>
Co-authored-by: Till Faelligen <2353100+S7evinK@users.noreply.github.com>

[skip ci]

.gitignore

@@ -78,3 +78,6 @@ build
 
 # golang workspaces
 go.work*
+
+# helm chart
+helm/dendrite/charts/

helm/dendrite/Chart.yaml

@@ -1,9 +1,10 @@
 apiVersion: v2
 name: dendrite
-version: "0.13.8"
+version: "0.14.0"
 appVersion: "0.13.6"
 description: Dendrite Matrix Homeserver
 type: application
+icon: https://avatars.githubusercontent.com/u/8418310?s=48&v=4
 keywords:
   - matrix
   - chat
@@ -14,6 +15,6 @@ sources:
   - https://github.com/matrix-org/dendrite
 dependencies:
   - name: postgresql
-  version: 12.1.7
+    version: 14.2.3
     repository: https://charts.bitnami.com/bitnami
     condition: postgresql.enabled