Bump transformers from 2.5.1 to 4.30.0 in /examples/onnx/gpt2#1068

dependabot[bot] wants to merge 1 commit intomasterapache/singa:masterfrom

dependabot/pip/examples/onnx/gpt2/transformers-4.30.0apache/singa:dependabot/pip/examples/onnx/gpt2/transformers-4.30.0Copy head branch name to clipboard