Bump protobuf from 3.20.1 to 3.20.2 in /examples/vai_quantizer/tensorflow2x/transformers_bert_qa#1271

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dependabot/pip/examples/vai_quantizer/tensorflow2x/transformers_bert_qa/protobuf-3.20.2Xilinx/Vitis-AI:dependabot/pip/examples/vai_quantizer/tensorflow2x/transformers_bert_qa/protobuf-3.20.2Copy head branch name to clipboard