golang: allow downloads during instalation of gRPC protobuf plugins #24518

Job	Run time
Classify changes	4s
Bootstrap Pants, test Rust (Linux-ARM64)	1m 47s
Bootstrap Pants, test Rust (macOS12-x86_64)	3m 30s
Bootstrap Pants, test and lint Rust (Linux-x86_64)	2m 13s
Build wheels (Linux-ARM64)	0s
Build wheels (Linux-x86_64)	0s
Build wheels (macOS12-x86_64)	0s
Build wheels (macOS11-ARM64)	0s
Ensure PR has release notes	1s
Test Python (Linux-x86_64) Shard 0/10	7m 47s
Test Python (Linux-x86_64) Shard 1/10	8m 31s
Test Python (Linux-x86_64) Shard 2/10	11m 7s
Lint Python and Shell	3m 5s
Test Python (Linux-x86_64) Shard 3/10	8m 26s
Test Python (Linux-x86_64) Shard 4/10	17m 11s
Test Python (Linux-x86_64) Shard 5/10	7m 15s
Test Python (Linux-x86_64) Shard 6/10	3m 31s
Test Python (Linux-x86_64) Shard 7/10	5m 8s
Test Python (Linux-x86_64) Shard 8/10	6m 39s
Test Python (Linux-x86_64) Shard 9/10	6m 59s
Test Python (Linux-ARM64)	3m 48s
Test Python (macOS12-x86_64)	7m 44s
Set Merge OK	1s
Merge OK	1s
	1h 44m 48s

Provide feedback