Update helm values registry1.dso.mil/ironbank/opensource/kubernetes/kubectl to v1.25.3

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/opensource/kubernetes/kubectl	patch	v1.25.2 -> v1.25.3

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chart/values.yaml

@@ -407,7 +407,7 @@ webhooksCleanup:
   # -- Create a helm pre-delete hook to cleanup webhooks.
   enable: false
   # -- `kubectl` image to run commands for deleting webhooks.
-  image: registry1.dso.mil/ironbank/opensource/kubernetes/kubectl:v1.25.2
+  image: registry1.dso.mil/ironbank/opensource/kubernetes/kubectl:v1.25.3
 
 # -- A writable volume to use for the TUF root initialization
 tufRootMountPath: /.sigstore
@@ -429,7 +429,7 @@ openshift: false
 bbtests:
   enabled: false
   scripts:
-    image: registry1.dso.mil/ironbank/opensource/kubernetes/kubectl:v1.25.2
+    image: registry1.dso.mil/ironbank/opensource/kubernetes/kubectl:v1.25.3
     additionalVolumeMounts:
       - name: "kyverno-bbtest-manifest"
         mountPath: /yaml