Fix grpc, protoc-gen-validate and envoy_api, c-ares for Bazel 9

[meteorcloudy]

This PR adds

• grpc@1.76.0
• envoy_api@0.0.0-20251105-4a2b9a3
• protoc-gen-validate@1.2.1.bcr.2
• c-ares 1.34.5.bcr.1 (Adding REPO.bazel for windows bazelbuild/bazel@20d9382)

Patches upstreamed at

• Fix grpc for Bazel 9 grpc/grpc#41023
• Add JavaInfo loading to protobuf.bzl bufbuild/protoc-gen-validate#1325
• Upstream bzlmod fixes and make it work with Bazel 9 envoyproxy/data-plane-api#633

[bazel-io]

Hello @mering, modules you maintain (protoc-gen-validate) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.

[gemini-code-assist]

Code Review

This pull request adds version 1.2.1.bcr.2 of the protoc-gen-validate module to fix compatibility with Bazel 9. The changes include adding a new module version with updated dependencies and a patch to fix load statements. The presubmit.yml is also updated to test against Bazel 9. The changes are generally good and follow the BCR guidelines. I have a couple of suggestions to improve the maintainability of the MODULE.bazel file by using for loops instead of list comprehensions for side effects, which is the idiomatic way in Starlark.

[bazel-io]

Hello @mering, modules you maintain (envoy_api, protoc-gen-validate) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.

[bazel-io]

Hello @veblush, @pawbhard, @eugeneo, @drfloob, @rishesh007, @markdroth, @yashykt, @apolcyn, @sergiitk, @sreenithi, @stanley-cheung, modules you maintain (grpc) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.

[mering]

Thanks for working on this!

[mering]

Out of curiosity: What is the difference between .x and .*? Should we align on one approach?

[meteorcloudy]

9.* fetches the latest release or release rc. 9.x only fetches the latest official release, which doesn't exist yet.

[mering]

Nit: I would expect protoc to be used at build time and therefore u sing host instead of exec. Can you elaborate on this change?

[meteorcloudy]

The execution platform is not necessarily the host platform when doing remote execution. This change is needed for --incompatible_disable_starlark_host_transitions, also upstreamed at bufbuild/protoc-gen-validate@0ca681b

Require module maintainers' approval for newly pushed changes.

[bazel-io]

Hello @bazelbuild/bcr-maintainers, modules without existing maintainers (c-ares) have been updated in this PR.
Please review the changes. You can view a diff against the previous version in the "Generate module diff" check.