commit c02b5421692ee7665ca7fd2c5c769f09c2d09749
Author: Warren Gifford <warrenbruceg@gmail.com>
Date:   Wed Nov 12 13:29:57 2025 -0800

    fix(release): unbound var error in image push scripts (#7830)
    
    https://github.com/sourcegraph/sourcegraph/pull/7741 seems to have
    introduced an unbound var error to the release scripts. This broke the
    promotion step in the finalize release steps:
    https://buildkite.com/sourcegraph/sourcegraph/builds/344955#019a79e0-063f-4262-b8c1-025784709023
    ```
    (21:02:10) INFO: Invocation ID: d063563b-d2df-4451-90a9-845106fcadb0
    --
      | (21:02:11) INFO: Current date is 2025-11-12
      | (21:02:11) INFO: Analyzed target //dev/tools:crane (0 packages loaded, 0 targets configured).
      | (21:02:11) INFO: Found 1 target...
      | Target //dev/tools:crane up-to-date:
      | bazel-bin/dev/tools/crane
      | Aspect @@rules_rust+//rust/private:clippy.bzl%rust_clippy_aspect of //dev/tools:crane up-to-date (nothing to build)
      | (21:02:11) INFO: Elapsed time: 0.154s, Critical Path: 0.00s
      | (21:02:11) INFO: 1 process: 1 internal.
      | (21:02:11) INFO: Build completed successfully, 1 total action
      | ./tools/release/promote_images.sh: line 33: ADDITIONAL_PROD_REGISTRIES: unbound variable
      | Uploading annotations
      | include_names=false, annotate_opts=-t info
      | 🚨 Error: The command exited with status 1
    
    ```