Update dependency dadav/helm-schema to v0.21.2 (nginx#4798)

| datasource  | package           | from   | to     |
| ----------- | ----------------- | ------ | ------ |
| github-tags | dadav/helm-schema | 0.21.1 | 0.21.2 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.pre-commit-config.yaml

@@ -85,7 +85,7 @@ repos:
         args: [-w, -s, -i, "4"]
 
   - repo: https://github.com/dadav/helm-schema
-    rev: 0.21.1
+    rev: 0.21.2
     hooks:
       - id: helm-schema
         args:

Makefile

@@ -38,7 +38,7 @@ NODE_VERSION = 24
 # renovate: datasource=docker depName=quay.io/helmpack/chart-testing
 CHART_TESTING_VERSION = v3.14.0
 # renovate: datasource=github-tags depName=dadav/helm-schema
-HELM_SCHEMA_VERSION = 0.21.1
+HELM_SCHEMA_VERSION = 0.21.2
 
 # variables that can be overridden by the user
 PREFIX ?= nginx-gateway-fabric## The name of the NGF image. For example, nginx-gateway-fabric