Upgrade upb bazel to 60607da

bazel/grpc_deps.bzl

@@ -288,11 +288,11 @@ def grpc_deps():
     if "upb" not in native.existing_rules():
         http_archive(
             name = "upb",
-            sha256 = "7992217989f3156f8109931c1fc6db3434b7414957cb82371552377beaeb9d6c",
-            strip_prefix = "upb-382d5afc60e05470c23e8de19b19fc5ad231e732",
+            sha256 = "c0b97bf91dfea7e8d7579c24e2ecdd02d10b00f3c5defc3dce23d95100d0e664",
+            strip_prefix = "upb-60607da72e89ba0c84c84054d2e562d8b6b61177",
             urls = [
-                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/upb/archive/382d5afc60e05470c23e8de19b19fc5ad231e732.tar.gz",
-                "https://github.com/protocolbuffers/upb/archive/382d5afc60e05470c23e8de19b19fc5ad231e732.tar.gz",
+                "https://storage.googleapis.com/grpc-bazel-mirror/github.com/protocolbuffers/upb/archive/60607da72e89ba0c84c84054d2e562d8b6b61177.tar.gz",
+                "https://github.com/protocolbuffers/upb/archive/60607da72e89ba0c84c84054d2e562d8b6b61177.tar.gz",
             ],
         )