dnscrypt-proxy2: Update to 2.0.36

* Version 2.0.36
- New option: `block_undelegated`. When enabled, `dnscrypt-proxy` will
directly respond to queries for locally-served zones (https://sk.tl/2QqB971U)
and nonexistent zones that should have been kept local, but are frequently
leaked. This reduces latency and improves privacy.
- Conformance: the `DO` bit is now set in synthetic responses if it was
set in a question, and the `AD` bit is cleared.
- The `miegkg/dns` module was updated to version 1.1.26, that fixes a
security issue affecting non-encrypted/non-authenticated DNS traffic. In
`dnscrypt-proxy`, this only affects the forwarding feature.

(nia)