Update dependencies

[benashz]

Pin go docker image to 1.17.2 to ensure more deterministic CI workflow.

Executed the injector acceptance test from https://github.com/hashicorp/vault-helm against an image with these updates:

make test-acceptance LOCAL_ACCEPTANCE_TESTS=true ACCEPTANCE_TESTS=acceptance/injector.bats
kind get clusters | grep -q "^vault-helm$" || \
        kind create cluster \
        --image kindest/node:v1.20.2 \
        --name vault-helm  \
        --config /Users/bash/src/github.com/hashicorp/vault-helm/test/kind/config.yaml
kubectl config use-context kind-vault-helm
Switched to context "kind-vault-helm".
bats test/acceptance/injector.bats
 ✓ injector: testing deployment

1 test, 0 failures

[tvoran]

I tested it a bit manually as well and all seems to work.