main/postmarketos-config-nftables: make mDNS rule more restrictive (MR 3755)

mDNS queries and replies are sent to port 5353.
Update firewall rule in order to make it as tight as possible.

[ci:skip-build]: already built successfully in CI

main/postmarketos-config-nftables/APKBUILD

 # Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-config-nftables
-pkgver=0.13
+pkgver=0.14
 pkgrel=0
 pkgdesc="nftables firewall configuration for postmarketOS"
 url="https://gitlab.com/postmarketos"
@@ -129,7 +129,7 @@ sha512sums="
 166d77bcccc85a3db24af85010d07241cf193bccd79064863fbf9da7be4426364e9f9a9e0668c2c8018ada470d0fda30fe8eba24d24a2d4150af1d78af31b9b7  00_log_all.nft
 10b3ab4d1f98a669e88fb2113a3880c4bf410d68859fe6a3efe8d638e3060af4a829485aed8c8da226c7fb7a53bab1bc90a659cb8fad9ccd226d808dbba94caf  01_wwan.nft
 d5a7c7fc47924acfafee42d731e6a0109d83af6278053128deecbf3cf40e37447cb649360ee9ebddd2a5ea276888314b63ce7ef828708b5bf7dd1bface7fbc62  10_dhcp.nft
-2d6ad24b1beede8c9df6d9fe9ac3338a90691c5a964e1aaa5d6e85b4a7db96e9303c26a595836b247a1e1c1ede6b40de120c2fdfb7ab7d30b33140c4b43ce206  50_mdns.nft
+597bf66783379691962f4b87a29e6219d5f87ef17d49b261c7b1eebe54561deafce4be77de3b39252c10b7b4452ac5b55870dd30605d7d0f074d27b06d1dfa6d  50_mdns.nft
 136a95d2f21d2935dcd85d4c40d597fbddffb31126dbcbc78f1b286454b7623cf16f6059dea6040d35e8f14d8ac79e292cc51bd6675afedc6953a6793315c786  50_ssh.nft
 5779bbcc55e411ec4da58e4e7eaaa6918cdcea5b8818cd72ab93be2d1108f020861457dbd8079a60b0912f84d05eb7b42274cc9a0577f66e8322f3596b89b411  50_upnp_client.nft
 9207bef8d2df8d728521aef19f3c6ccb5c645a0295617b54722a6867c86b29c13502a01747eb3c91602f416f60bdc2bfa18dfb4906e17494923996596b6b1444  50_vlc_chromecast.nft

main/postmarketos-config-nftables/rules/50_mdns.nft

@@ -2,6 +2,6 @@
 
 table inet filter {
 	chain input {
-		udp sport 5353 accept comment "accept mDNS replies"
+		udp sport mdns udp dport mdns accept comment "accept incoming mDNS traffic"
 	}
 }