Merge in DNS/dnsproxy from fix-236 to master

Squashed commit of the following:

commit 0a10e29305272baf478cf0e6c7626fbe23ab7f14
Author: Andrey Meshkov <am@adguard.com>
Date:   Mon Oct 24 10:37:28 2022 +0300

    fix review comments

commit 67e35bd56f6e91050cac3f643d44ff21c3c0eec4
Author: Andrey Meshkov <am@adguard.com>
Date:   Mon Oct 24 10:10:02 2022 +0300

    fix review comments

commit f5ca4b40
Author: Andrey Meshkov <am@adguard.com>
Date:   Sun Oct 23 20:41:44 2022 +0300

    Add unit-tests checking that 0-RTT is used for QUIC connections

    This test utilizes quic-go's logging.Tracer to record detailed information
    about QUIC connections and check that 0-RTT packets are being when the upstream
    reconnects to the server.

    Closes #236