chore(deps): update docker.io/bitnami/kubectl docker tag to v1.31.1

Signed-off-by: Renovate Bot <[email protected]>

Author: vshn-renovate

class/defaults.yml

@@ -23,7 +23,7 @@ parameters:
       kubectl:
         registry: docker.io
         repository: bitnami/kubectl
-        tag: '1.30.4@sha256:68a21ff34c2a67329faa4d6088272d54d4a4e7a21076b3a435624e45503a17ab'
+        tag: '1.31.1@sha256:da4a9868e20d941636087cb8624a4bb441f5249d69e8f3d27e53c7d4d280a5f3'
       kapitan:
         registry: docker.io
         repository: kapicorp/kapitan