dnsdist: Update to 1.6.1

This patch makes this package available for aarch64. There are no
reasons why it shouldn't be.

Compiling has become more resource-hungry which is why the memory
consumption per process has been upped to 3GiB.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Reviewed-by: Adolf Belka <adolf.belka@ipfire.org>

src/patches/dnsdist-1.6.0-missing-mutex-header.patch

@@ -1,22 +0,0 @@
-From 65bb0ab32a449d8fb8cf9a4802d16ba4912d9fc4 Mon Sep 17 00:00:00 2001
-From: Remi Gacogne <remi.gacogne@powerdns.com>
-Date: Tue, 25 May 2021 10:09:43 +0200
-Subject: [PATCH] dnsdist-1.6.x: Backport a missing mutex header
-
----
- pdns/lock.hh | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/pdns/lock.hh b/pdns/lock.hh
-index 09299d7979d..0e88118c564 100644
---- a/pdns/lock.hh
-+++ b/pdns/lock.hh
-@@ -20,6 +20,8 @@
-  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-  */
- #pragma once
-+
-+#include <mutex>
- #include <shared_mutex>
- 
- class ReadWriteLock