Bump google.golang.org/grpc from 1.63.0 to 1.63.2 #31972

Job	Run time
Check whether tests need to be run based on diff	20s
Verify docs and spelling	44s
Golangci-lint (ubuntu-latest)	7m 39s
Integration test	10m 20s
Unit test (ubuntu-latest)	6m 39s
Unit test (windows-2022)	10m 9s
Go benchmark test	4m 40s
Build Antrea and antctl binaries	9m 50s
Golangci-lint (macos-latest)	10m 19s
Check tidy, code generation and manifest	5m 19s
Build Antrea Windows binaries	1m 51s
	1h 7m 50s

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