Merge tag 'v5.7.0' into 6.0

diff --cc NEWS
index 61272083cfae004ec3e3f302d1fa8858b69285de,f1cfa6791a86746165af591f0359d9e50d15d911..47a01f28c1cf67b50991d47357bdb1a177bb947d
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -1,15 -1,14 +1,23 @@@
 -Knot Resolver 5.7.0 (2023-08-22)
 +Knot Resolver 6.0.0 (2023-mm-dd)
 +================================
 +
 +Improvements
 +------------
 +- Knot Resolver v6 alpha starts
 +- 6.0.x versions are dedicated to alpha cycle
 +
 +
 +Knot Resolver 5.7.0 (2023-0m-dd)
  ================================
  
+ Security
+ --------
+ - avoid excessive TCP reconnections in a few more cases (!NNNN)
+   Like before, the remote server had to behave nonsensically in order
+   to inflict this upon itself, but it might be abusable for DoS.
+ 
+   We thank Ivan Jedek from OryxLabs for reporting this.
+ 
  Improvements
  ------------
  - forwarding mode: tweak dealing with failures from forwarders,

diff --cc meson.build
Simple merge