fix(ci): remove invalid skip_push field from GoReleaser config

The dockers_v2 section in GoReleaser doesn't support the skip_push field.
This was causing configuration validation errors during make check.

GoReleaser's --snapshot mode automatically handles not pushing images by
building architecture-specific local images instead of multi-arch manifests,
so explicit skip_push configuration is not needed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Enteee

.goreleaser.yml

@@ -86,7 +86,6 @@ changelog:
 
 dockers_v2:
   - id: djalgorhythm-images
-    skip_push: '{{ .IsSnapshot }}'
     images:
       - enteee/djalgorhythm
       - ghcr.io/enteee/djalgorhythm