byacc: switch to official HTTPS mirror

FTP does not always work in corporate networks. Switch to the HTTPS URL
mentioned on the tool's homepage. The same URL is also used by FreeBSD [1].

[1] https://cgit.freebsd.org/ports/tree/devel/byacc/Makefile?id=b128c1dbf3e8fbada5f753631041bf93ac51bf4d

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit d79ca2ebc4)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-extended/byacc/byacc.inc

@@ -6,7 +6,7 @@ programming language."
 SECTION = "devel"
 LICENSE = "PD"
 
-SRC_URI = "ftp://ftp.invisible-island.net/byacc/byacc-${PV}.tgz \
+SRC_URI = "https://invisible-mirror.net/archives/byacc/byacc-${PV}.tgz \
            file://byacc-open.patch \
            file://0001-byacc-do-not-reorder-CC-and-CFLAGS.patch"