feat: update consumer-test to use 3.0.0-rc1 from BCR (#15354)

Author: jinseopkim0

ci/bzlmod_tests/consumer-test/MODULE.bazel

@@ -1,10 +1,5 @@
 module(name = "bzlmod-consumer-test")
 
-bazel_dep(name = "google_cloud_cpp", version = "3.0.0-rc0")
+bazel_dep(name = "google_cloud_cpp", version = "3.0.0-rc1")
 bazel_dep(name = "googletest", version = "1.15.2")
 bazel_dep(name = "rules_cc", version = "0.1.1")
-
-local_path_override(
-    module_name = "google_cloud_cpp",
-    path = "/workspace/google-cloud-cpp",
-)