golang: Switch default go1.10 -> go1.14

Go1.10 is outdated by today as it was last updated in Jan 2019:

	https://golang.org/doc/devel/release.html#go1.10

Go1.14 is current oldstable - i.e. it is still supported and mature.

As currently no in-tree SR or component use gowork's default, the switch
should not introduce any breakage.

component/golang/buildout.cfg

@@ -118,7 +118,7 @@ bin	= ${:directory}/bin
 depends = ${gowork.goinstall:recipe}
 
 # go version used for the workspace (possible to override in applications)
-golang  = ${golang1.10:location}
+golang  = ${golang1.14:location}
 
 # no special build flags by default
 buildflags =