Deprecate bytecode v3 and bump kMinSupportedBytecodeVersion to 4 (pytorch#75149)

Summary:
Pull Request resolved: pytorch#75149

https://github.com/pytorch/rfcs/blob/master/RFC-0017-PyTorch-Operator-Versioning.md
ghstack-source-id: 152906910

Test Plan: CI

Reviewed By: qihqi

Differential Revision: D35338681

fbshipit-source-id: 03cb699696af2c946d67ece95bdc019fc4a4cb11

Author: cccclai

caffe2/serialize/versions.h

@@ -134,7 +134,7 @@ constexpr uint64_t kProducedBytecodeVersion = 0x8L;
 // kMinSupportedBytecodeVersion <= model_version <= kMaxSupportedBytecodeVersion
 // (in loader), we should support this model_version. For example, we provide a
 // wrapper to handle an updated operator.
-constexpr uint64_t kMinSupportedBytecodeVersion = 0x3L;
+constexpr uint64_t kMinSupportedBytecodeVersion = 0x4L;
 constexpr uint64_t kMaxSupportedBytecodeVersion = 0x8L;
 
 } // namespace serialize