feat: Move from Cloudflare's API Key to API Token (#789)

Co-authored-by: Arthur Zapparoli <arthurgeek@users.noreply.github.com>

tmpl/kubernetes/external-dns-secret.sops.yaml

@@ -5,5 +5,4 @@ metadata:
   name: external-dns-secret
   namespace: networking
 stringData:
-  email: "${BOOTSTRAP_CLOUDFLARE_EMAIL}"
-  api-key: "${BOOTSTRAP_CLOUDFLARE_APIKEY}"
+  api-token: "${BOOTSTRAP_CLOUDFLARE_APITOKEN}"