stack/slapos: version up slapos.recipe.build 0.47

also apply the change in software/theia/test/dummy/software.cfg for consistency

software/theia/test/dummy/software.cfg

@@ -16,4 +16,4 @@ init =
     json.dump(dict(os.environ), f)
 
 [versions]
-slapos.recipe.build = 0.46
+slapos.recipe.build = 0.47

stack/slapos.cfg

@@ -195,7 +195,7 @@ slapos.extension.strip = 0.4
 slapos.extension.shared = 1.0
 slapos.libnetworkcache = 0.20
 slapos.rebootstrap = 4.5
-slapos.recipe.build = 0.46
+slapos.recipe.build = 0.47
 slapos.recipe.cmmi = 0.17
 slapos.recipe.template = 4.6
 slapos.toolbox = 0.122