Pull request: 5010 revert default cache size

Merge in DNS/adguard-home from 5010-default-settings to master

Updates AdguardTeam#5010.

Squashed commit of the following:

commit 19edb2c
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Oct 11 19:45:49 2022 +0300

    all: imp log of changes

commit a0ad92f
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Oct 11 19:34:37 2022 +0300

    home: revert default value

CHANGELOG.md

@@ -27,6 +27,8 @@ and this project adheres to
 
 ### Fixed
 
+- The default value of `dns.cache_size` accidentally set to 0 has now been
+  reverted to 4 MiB ([#5010]).
 - Responses for which the DNSSEC validation had explicitly been omitted aren't
   cached now ([#4942]).
 - Web UI not switching to HTTP/3 ([#4986], [#4993]).
@@ -35,6 +37,7 @@ and this project adheres to
 [#4942]: https://github.com/AdguardTeam/AdGuardHome/issues/4942
 [#4986]: https://github.com/AdguardTeam/AdGuardHome/issues/4986
 [#4993]: https://github.com/AdguardTeam/AdGuardHome/issues/4993
+[#5010]: https://github.com/AdguardTeam/AdGuardHome/issues/5010
 
 [clientid]:  https://github.com/AdguardTeam/AdGuardHome/wiki/Clients#clientid
 

internal/home/config.go

@@ -236,6 +236,7 @@ var config = &configuration{
 			},
 
 			TrustedProxies: []string{"127.0.0.0/8", "::1/128"},
+			CacheSize:      4 * 1024 * 1024,
 
 			// set default maximum concurrent queries to 300
 			// we introduced a default limit due to this: