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Kazuaki Ishizaki authored and GitHub committed 461750a21e5
ARROW-17101: [Java] Update protoc and protoc-gen-grpc-java (#13632) Update protoc-gen-grpc-java and protoc versions to 4.17.0 and 21.2. Authored-by: Kazuaki Ishizaki <ishizaki@jp.ibm.com> Signed-off-by: Sutou Kouhei <kou@clear-code.com>