dovecot: Upgrade to 2.3.21.1

Fix build with icu-76.x while here

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-support/dovecot/dovecot/1ccd5b54a408d12fce0c94ab0bbaedbb5ef69830.patch

@@ -0,0 +1,24 @@
+From 1ccd5b54a408d12fce0c94ab0bbaedbb5ef69830 Mon Sep 17 00:00:00 2001
+From: fundawang <fundawang@yeah.net>
+Date: Sun, 27 Oct 2024 22:11:21 +0800
+Subject: [PATCH] configure: Explicitly check for icu-uc
+
+Ensure we link against libicu-uc when it's split in v76.
+
+Upstream-Status: Backport [https://github.com/dovecot/core/commit/1ccd5b54a408d12fce0c94ab0bbaedbb5ef69830]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ m4/want_icu.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/m4/want_icu.m4
++++ b/m4/want_icu.m4
+@@ -1,7 +1,7 @@
+ AC_DEFUN([DOVECOT_WANT_ICU], [
+   if test "$want_icu" != "no"; then
+     if test "$PKG_CONFIG" != "" && $PKG_CONFIG --exists icu-i18n 2>/dev/null; then
+-      PKG_CHECK_MODULES(LIBICU, icu-i18n)
++      PKG_CHECK_MODULES(LIBICU, [icu-i18n icu-uc])
+       have_icu=yes
+       AC_DEFINE(HAVE_LIBICU,, [Define if you want ICU normalization support for FTS])
+     elif test "$want_icu" = "yes"; then

meta-networking/recipes-support/dovecot/dovecot_2.3.21.1.bb

@@ -11,8 +11,9 @@ SRC_URI = "http://dovecot.org/releases/2.3/dovecot-${PV}.tar.gz \
            file://dovecot.socket \
            file://0001-not-check-pandoc.patch \
            file://0001-m4-Check-for-libunwind-instead-of-libunwind-generic.patch \
+           file://1ccd5b54a408d12fce0c94ab0bbaedbb5ef69830.patch \
            "
-SRC_URI[sha256sum] = "05b11093a71c237c2ef309ad587510721cc93bbee6828251549fc1586c36502d"
+SRC_URI[sha256sum] = "2d90a178c4297611088bf7daae5492a3bc3d5ab6328c3a032eb425d2c249097e"
 
 DEPENDS = "openssl xz zlib bzip2 libcap icu libtirpc bison-native"
 CFLAGS += "-I${STAGING_INCDIR}/tirpc"