prepare release notes for Ditto 3.4.3

Signed-off-by: Thomas Jäckle <thomas.jaeckle@beyonnex.io>

deployment/helm/ditto/Chart.yaml

@@ -16,8 +16,8 @@ description: |
   A digital twin is a virtual, cloud based, representation of his real world counterpart
   (real world “Things”, e.g. devices like sensors, smart heating, connected cars, smart grids, EV charging stations etc).
 type: application
-version: 3.4.3-0  # chart version is effectively set by release-job
-appVersion: 3.4.2
+version: 3.4.3  # chart version is effectively set by release-job
+appVersion: 3.4.3
 keywords:
   - iot-chart
   - digital-twin

documentation/src/main/resources/_data/sidebars/ditto_sidebar.yml

@@ -23,6 +23,9 @@ entries:
       - title: Release Notes
         output: web
         folderitems:
+          - title: 3.4.3
+            url: /release_notes_343.html
+            output: web
           - title: 3.4.2
             url: /release_notes_342.html
             output: web

documentation/src/main/resources/pages/ditto/release_notes_343.md

@@ -0,0 +1,38 @@
+---
+title: Release notes 3.4.3
+tags: [release_notes]
+published: true
+keywords: release notes, announcements, changelog
+summary: "Version 3.4.3 of Eclipse Ditto, released on 05.12.2023"
+permalink: release_notes_343.html
+---
+
+This is a bugfix release, no new features since [3.4.2](release_notes_341.html) were added.
+
+## Changelog
+
+Compared to the latest release [3.4.2](release_notes_341.html), the following changes and bugfixes were added.
+
+### Changes
+
+
+### Bugfixes
+
+This is a complete list of the
+[merged pull requests](https://github.com/eclipse-ditto/ditto/pulls?q=is%3Apr+milestone%3A3.4.3).
+
+#### Update logback 1.2 to mitigate CVE
+
+PR [#1835](https://github.com/eclipse-ditto/ditto/pull/1835) updates logback to patch version `1.2.13` in order to
+mitigate the logback CVE [CVE-2023-6481](https://www.cve.org/cverecord?id=CVE-2023-6481).
+
+
+### Helm Chart
+
+The [Ditto Helm Chart](https://github.com/eclipse-ditto/ditto/tree/master/deployment/helm) contained some configuration 
+bugs and enhancements which are also addressed with this bugfix release.
+
+#### Removed X-Original-URI from NGINX ingress
+
+Bug [#1833](https://github.com/eclipse-ditto/ditto/issues/1833) about a regression in the Ingress-Nginx configuration
+of the Ditto helm chart, was resolved via [#1834](https://github.com/eclipse-ditto/ditto/pull/1834).