less: upgrade 678 -> 679

Changelog:
==========
- Fix bad parsing of lesskey file an env var is a prefix of another env var
- Fix unexpected exit using -K if a key press is received while reading the input file

(From OE-Core rev: 25f101eecdb9921bf42c99b63dd6f036ceff00b5)

Signed-off-by: Liu Yiding <liuyd.fnst@fujitsu.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/less/less_678.bb → meta/recipes-extended/less/less_679.bb

@@ -29,7 +29,7 @@ SRC_URI = "http://www.greenwoodsoftware.com/${BPN}/${BPN}-${PV}.tar.gz \
            file://run-ptest \
            "
 
-SRC_URI[sha256sum] = "4c085364f3028290d34647df27f56018c365dc4c0092ab7de74ed8fe89014fe7"
+SRC_URI[sha256sum] = "9b68820c34fa8a0af6b0e01b74f0298bcdd40a0489c61649b47058908a153d78"
 
 UPSTREAM_CHECK_URI = "http://www.greenwoodsoftware.com/less/download.html"