build: Update metadata.yml with new version

Signed-off-by: Kubewarden bot <[email protected]>

Author: kubewarden-auth-token-generator[bot]

metadata.yml

@@ -26,7 +26,7 @@ annotations:
   # kubewarden specific
   io.kubewarden.policy.ociUrl: ghcr.io/kubewarden/policies/verify-image-signatures
   io.kubewarden.policy.title: verify-image-signatures
-  io.kubewarden.policy.version: 1.0.3
+  io.kubewarden.policy.version: 1.0.4
   io.kubewarden.policy.description: A Kubewarden Policy that verifies all the signatures of the container images referenced by a Pod
   io.kubewarden.policy.author: Kubewarden developers <[email protected]>
   io.kubewarden.policy.url: https://github.com/kubewarden/verify-image-signatures