Bump upb version

PiperOrigin-RevId: 490544186

ruby/ext/google/protobuf_c/ruby-upb.h

diff --git a/ruby/ext/google/protobuf_c/ruby-upb.h b/ruby/ext/google/protobuf_c/ruby-upb.h
index fc544cb..ec2fa4f 100755
--- a/ruby/ext/google/protobuf_c/ruby-upb.h
+++ b/ruby/ext/google/protobuf_c/ruby-upb.h
@@ -1146,8 +1146,11 @@
 }
 
 // Internal-only functions, in .h file only out of necessity.
+
 UPB_INLINE bool upb_tabent_isempty(const upb_tabent* e) { return e->key == 0; }
 
+uint32_t _upb_Hash(const void* p, size_t n, uint64_t seed);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif