Bump grpcio-tools from 1.67.0 to 1.68.1 #1355

Job	Run time
Sanity Check Windows Executable	29s
Linting	10s
3.8.17	59s
3.9.17	59s
3.10.12	1m 4s
3.11.4	1m 3s
	4m 44s

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