chore(deps): update dependency protoc-gen-validate to v1.2.1.bcr.1 (#15174)

Co-authored-by: Yao Cui <cuiyao@google.com>

Author: renovate-bot

MODULE.bazel

@@ -44,7 +44,7 @@ bazel_dep(name = "zlib", version = "1.3.1.bcr.6")
 bazel_dep(name = "c-ares", version = "1.19.1.bcr.1", repo_name = "com_github_cares_cares")
 
 # Pin this to fix a break in bazel/deps-cache.py
-bazel_dep(name = "protoc-gen-validate", version = "1.2.1", dev_dependency = True, repo_name = "com_envoyproxy_protoc_gen_validate")
+bazel_dep(name = "protoc-gen-validate", version = "1.2.1.bcr.1", dev_dependency = True, repo_name = "com_envoyproxy_protoc_gen_validate")
 
 python = use_extension("@rules_python//python/extensions:python.bzl", "python")
 python.toolchain(