fetchmail: upgrade 6.4.21 -> 6.4.23

fetchmail-6.4.23 (released 2021-10-31, 30206 LoC):

 For common ssh-based IMAP PREAUTH setups (i. e. those that use a plugin
 - no matter its contents - and that set auth ssh), change the STARTTLS
 error message to suggest sslproto '' instead.
 This is a commonly reported issue after the CVE-2021-39272 fix in 6.4.22.
 Fixes Redhat Bugzilla 2008160. Fixes GitLab openembedded#39.

License-Update:
 Add "SSL library considerations" to COPYING.
 Format of COPYING changed.

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-support/fetchmail/fetchmail_6.4.21.bb → meta-networking/recipes-support/fetchmail/fetchmail_6.4.23.bb

@@ -6,13 +6,13 @@ connections). It supports every remote-mail protocol now in use on the Internet:
 RPOP, APOP, KPOP, all flavors of IMAP, ETRN, and ODMR. It can even support IPv6 and IPSEC."
 SECTION = "mail"
 LICENSE = "GPLv2 & MIT"
-LIC_FILES_CHKSUM = "file://COPYING;md5=ad73c6bd421c137fbf18cf8b92474186"
+LIC_FILES_CHKSUM = "file://COPYING;md5=c3a05d9b9d3784c824c9b92a648e1353"
 
 DEPENDS = "openssl"
 
 SRC_URI = "${SOURCEFORGE_MIRROR}/${BPN}/${BPN}-${PV}.tar.xz \
            "
-SRC_URI[sha256sum] = "6a459c1cafd7a1daa5cd137140da60c18c84b5699cd8e7249a79c33342c99d1d"
+SRC_URI[sha256sum] = "5f7a5e13731431134a2ca535bbced7adc666d3aeb93169a0830945d91f492300"
 
 inherit autotools gettext pkgconfig python3-dir python3native