Relax `protobuf<5.0.0` restriction #11619

Job	Run time
lint-python-flake8 (3.9)	15s
lint-python-flake8 (3.10)	15s
lint-python-flake8 (3.11)	12s
lint-misc	17s
lint-frontend	1m 16s
build-data-server-pip (native, ubuntu-20.04, 1.65.0)	1m 9s
lint-python-yaml-docs	23s
build-data-server-pip (native, macos-12, 1.65.0)	2m 43s
lint-rust (1.65.0, 0.16.1)	31s
build-data-server-pip (universal, ubuntu-20.04, 1.65.0)	14s
build (tf, 3.9)	10m 13s
build (notf, 3.9)	6m 32s
	24m 0s

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