build(deps): bump protobuf from 29.2 to 30.2, and remove rules_apple

Author: vorburger

MODULE.bazel

@@ -28,17 +28,16 @@ GRPC_JAVA_VERSION = "1.69.0"
 # see https://github.com/bazelbuild/bazel/issues/20877, NB the "_definition" suffix!
 register_toolchains("//tools/java_toolchain:repository_default_java_toolchain_definition")
 
-# see https://github.com/bazelbuild/rules_apple/issues/2660
-# for https://github.com/enola-dev/enola/issues/1146
-bazel_dep(name = "rules_apple", version = "3.19.1", repo_name = "build_bazel_rules_apple")
-
 # see https://github.com/enola-dev/enola/issues/1164
 # NO NEED: bazel_dep(name = "rules_cc", version = "0.0.17")
 bazel_dep(name = "re2", version = "2024-07-02.bcr.1")
 bazel_dep(name = "abseil-cpp", version = "20250127.0")
 
+# https://github.com/protocolbuffers/protobuf/issues/21231
+bazel_dep(name = "protoc-gen-validate", version = "1.2.1.bcr.1")
+
 # https://github.com/protocolbuffers/protobuf/tree/main?tab=readme-ov-file#bazel-with-bzlmod
-bazel_dep(name = "protobuf", version = "29.4")
+bazel_dep(name = "protobuf", version = "30.2")
 
 # https://registry.bazel.build/modules/rules_java
 bazel_dep(name = "rules_java", version = "8.9.0")