tests/azure: update dependencies

This does not include an update of `github.com/hashicorp/terraform-exec`
to `v0.16.1`, as it contains a breaking change. `tfinstall` has been
removed and needs to be replaced with `github.com/hashicorp/hc-install`.

- github.com/fluxcd/helm-controller/api to v0.20.0
- github.com/fluxcd/image-automation-controller/api to v0.22.0
- github.com/fluxcd/image-reflector-controller/api to v0.17.2
- github.com/fluxcd/kustomize-controller/api to v0.24.0
- github.com/fluxcd/notification-controller/api to v0.23.3
- github.com/fluxcd/pkg/apis/meta to v0.12.2
- github.com/fluxcd/pkg/runtime to v0.14.1
- github.com/fluxcd/source-controller/api to v0.24.0
- k8s.io/api to v0.23.5
- k8s.io/apimachinery to v0.23.5
- k8s.io/client-go to v0.23.5
- sigs.k8s.io/controller-runtime to v0.11.2

Signed-off-by: Hidde Beydals <hello@hidde.co>