Bump keycloak version to 1.2.1

[rubenrouwhof]

Description

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Checklist

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• I have tested the changes locally and verified that they work as expected.
• I have followed the project's coding conventions and style guidelines.
• I have rebased my branch onto the latest commit of the main branch.
• I have squashed or reorganized my commits into logical units.
• I have read, understood and agree to the Developer Certificate of Origin, which this project utilizes.

[github-actions]

MANIFESTDIFF

diff -burN ./main-manifests/tools/keycloak/overlays/production/manifests.yaml ./pr-manifests/tools/keycloak/overlays/production/manifests.yaml
--- ./main-manifests/tools/keycloak/overlays/production/manifests.yaml	2025-01-16 13:36:44.892254882 +0000
+++ ./pr-manifests/tools/keycloak/overlays/production/manifests.yaml	2025-01-16 13:36:43.968242194 +0000
@@ -189,7 +189,7 @@
       initContainers:
       - command:
         - wget
-        - https://github.com/MinBZK/keycloak-theme/releases/download/v1.0.1/keycloak-nl-design-system.jar
+        - https://github.com/MinBZK/keycloak-theme/releases/download/v1.2.1/keycloak-nl-design-system.jar
         - -O
         - /opt/keycloak/providers/keycloak-nl-design-system.jar
         image: busybox:1.37.0

[laurensWe]

LGTM

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud