dns/dnsmasq-devel: update to v2.85rc2

• ea28d0e 2021-03-26 | Scale the DNS random scket pool on the value of dns-forward-max. (HEAD -> master, tag: v2.85rc2, origin/master, origin/HEAD) [Simon Kelley]
• 4a8c098 2021-03-26 | Change the method of allocation of random source ports for DNS. [Simon Kelley]
• ffa4628 2021-03-22 | Fix thinko in 51f7bc924cbcdeb09cbb83249b70c121d1ffa31e [黎醒聪]
• e10a923 2021-03-15 | Move repeated test pattern to server_test_type [Petr Menšík]
• 51f7bc9 2021-03-18 | Create common function for forward dump, log and send [Petr Menšík]
• 6c0bf79 2021-03-18 | Reduce few repetitions in forward code [Petr Menšík]
• 4b03170 2021-03-20 | Update German translation for 2.85rc1. [Matthias Andree]
• 1de6bbc 2021-03-19 | Fix FTBS on FreeBSD due to Linux-specific optimisation of if_nametoindex() [Simon Kelley]