build(deps): bump google.golang.org/grpc in /tools/invoker #1057

Job	Run time
Build and push all images (auth-go)	1m 39s
Build and push all images (auth-python)	1m 39s
Build and push all images (auth-nodejs)	1m 39s
Build and push all images (auth-python-lambda)	1m 36s
Build and push all images (auth-nodejs-lambda)	1m 52s
Build and push all images (auth-go-lambda)	1m 33s
Test Docker Compose (auth-go)	1m 10s
Test Docker Compose (auth-python)	1m 13s
Test Docker Compose (auth-nodejs)	1m 13s
Test AWS Lambda Deployment (auth-python-lambda)	1m 8s
Test Docker Compose (auth-go-tracing)	1m 23s
Test Knative Deployment (auth-go)	1m 59s
Test AWS Lambda Deployment (auth-nodejs-lambda)	1m 11s
Test Docker Compose (auth-python-tracing)	1m 12s
Test Knative Deployment (auth-python)	2m 14s
Test AWS Lambda Deployment (auth-go-lambda)	1m 14s
Test Docker Compose (auth-nodejs-tracing)	1m 13s
Test Knative Deployment (auth-nodejs)	2m 11s
Test Knative Deployment (auth-go-tracing)	2m 6s
Test Knative Deployment (auth-python-tracing)	2m 2s
Test Knative Deployment (auth-nodejs-tracing)	2m 18s
	33m 45s

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