chore(tests): Use ECR for Ubuntu base (#692)

To avoid dockerhub pull limits.

### Changes are visible to end-users: no

### Test plan

This is the test plan.

Author: arrdem

.bcr/patches/remove_dev_deps.patch

@@ -1,5 +1,5 @@
---- a/MODULE.bazel	2025-10-28 11:19:35
-+++ b/MODULE.bazel	2025-10-28 11:19:35
+--- a/MODULE.bazel	2025-10-28 13:08:11
++++ b/MODULE.bazel	2025-10-28 13:08:11
 @@ -22,557 +22,5 @@
      "@aspect_rules_py//py/private/toolchain/venv/...",
      "@aspect_rules_py//py/private/toolchain/unpack/...",
@@ -447,7 +447,7 @@
 -oci.pull(
 -    name = "ubuntu",
 -    digest = "sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab",
--    image = "ubuntu",
+-    image = "public.ecr.aws/docker/library/ubuntu",
 -    platforms = [
 -        "linux/arm64/v8",
 -        "linux/amd64",

MODULE.bazel

@@ -465,7 +465,7 @@ oci = use_extension("@rules_oci//oci:extensions.bzl", "oci", dev_dependency = Tr
 oci.pull(
     name = "ubuntu",
     digest = "sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab",
-    image = "ubuntu",
+    image = "public.ecr.aws/docker/library/ubuntu",
     platforms = [
         "linux/arm64/v8",
         "linux/amd64",

bazel/include/oci.MODULE.bazel

@@ -5,7 +5,7 @@ oci = use_extension("@rules_oci//oci:extensions.bzl", "oci", dev_dependency = Tr
 oci.pull(
     name = "ubuntu",
     digest = "sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab",
-    image = "ubuntu",
+    image = "public.ecr.aws/docker/library/ubuntu",
     platforms = [
         "linux/arm64/v8",
         "linux/amd64",