build(deps): bump google.golang.org/grpc in /tools/invoker #1198

Job	Run time
Build and push all images (auth-go, authGo)	4m 48s
Build and push all images (auth-python, authPython)	2m 18s
Build and push all images (auth-nodejs, authNodeJS)	1m 54s
Build and push all images (auth-go-lambda, authGoLambda)	1m 20s
Build and push all images (auth-nodejs-lambda, authNodeJSLambda)	1m 36s
Build and push all images (auth-python-lambda, authPythonLambda)	1m 26s
Test Docker Compose (auth-go)	1m 8s
Test Docker Compose (auth-python)	1m 16s
Test AWS Lambda Deployment (auth-python-lambda)	1m 4s
Test Docker Compose (auth-nodejs)	1m 13s
Test Knative Deployment (auth-go)	2m 1s
Test AWS Lambda Deployment (auth-nodejs-lambda)	1m 8s
Test Docker Compose (auth-go-tracing)	1m 12s
Test Knative Deployment (auth-python)	2m 2s
Test AWS Lambda Deployment (auth-go-lambda)	1m 5s
Test Docker Compose (auth-python-tracing)	1m 12s
Test Knative Deployment (auth-nodejs)	2m 12s
Test Docker Compose (auth-nodejs-tracing)	1m 22s
Test Knative Deployment (auth-go-tracing)	1m 54s
Test Knative Deployment (auth-python-tracing)	2m 13s
Test Knative Deployment (auth-nodejs-tracing)	2m 4s
	36m 28s

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