build(deps): bump google.golang.org/protobuf in /tools/invoker #1091

Job	Run time
Build and push all images (auth-go)	1m 34s
Build and push all images (auth-python)	1m 45s
Build and push all images (auth-nodejs)	1m 37s
Build and push all images (auth-python-lambda)	1m 56s
Build and push all images (auth-nodejs-lambda)	1m 33s
Build and push all images (auth-go-lambda)	1m 30s
Test Docker Compose (auth-go)	1m 11s
Test AWS Lambda Deployment (auth-python-lambda)	1m 9s
Test Docker Compose (auth-python)	1m 15s
Test Knative Deployment (auth-go)	2m 18s
Test AWS Lambda Deployment (auth-nodejs-lambda)	1m 7s
Test Docker Compose (auth-nodejs)	1m 13s
Test Knative Deployment (auth-python)	2m 12s
Test AWS Lambda Deployment (auth-go-lambda)	1m 4s
Test Docker Compose (auth-go-tracing)	1m 13s
Test Knative Deployment (auth-nodejs)	2m 16s
Test Docker Compose (auth-python-tracing)	1m 13s
Test Knative Deployment (auth-go-tracing)	2m 23s
Test Docker Compose (auth-nodejs-tracing)	1m 14s
Test Knative Deployment (auth-python-tracing)	2m 15s
Test Knative Deployment (auth-nodejs-tracing)	2m 20s
	34m 18s

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