Merge in DNS/dnsproxy from fix-doh3-races to master

Squashed commit of the following:

commit 9b1f2b2b768041dd315a2ff49e3658e4574124ee
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Oct 20 13:22:44 2022 +0300

    fix review comments

commit b2e11d956760847cb4e89dd904a1212da7846737
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Oct 20 12:50:58 2022 +0300

    fix review comments

commit 84a7f30ef69020099be6247a466491c3e36cd7ec
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Oct 20 11:00:32 2022 +0300

    upstream: yet another attempt to fix races