minicom: change SRC_URI to use Debian mirrors

Alioth is dead and the minicom project on Salsa (the replacement for Alioth)
doesn't actually have any files in, so just use the Debian mirror instead.

(From OE-Core rev: b0338efcdabeec79c568c74b6888d7d523e8e9dc)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/minicom/minicom_2.7.1.bb

@@ -7,7 +7,7 @@ LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=420477abc567404debca0a2a1cb6b645 \
                     file://src/minicom.h;beginline=1;endline=12;md5=a58838cb709f0db517f4e42730c49e81"
 
-SRC_URI = "https://alioth.debian.org/frs/download.php/latestfile/3/${BP}.tar.gz \
+SRC_URI = "${DEBIAN_MIRROR}/main/m/${BPN}/${BPN}_${PV}.orig.tar.gz \
            file://allow.to.disable.lockdev.patch \
            file://0001-fix-minicom-h-v-return-value-is-not-0.patch \
            file://0001-Fix-build-issus-surfaced-due-to-musl.patch \