chore(deps): update module github.com/twbs/icons to v1.13.1

Author: renovate[bot]

go.mod

@@ -7,5 +7,5 @@ require (
 	github.com/hbstack/hb v0.16.2 // indirect
 	github.com/hugomods/bootstrap v0.23.0 // indirect
 	github.com/hugomods/icons v0.6.6 // indirect
-	github.com/twbs/icons v1.11.3 // indirect
+	github.com/twbs/icons v1.13.1 // indirect
 )

go.sum

@@ -49,3 +49,4 @@ github.com/hugomods/icons v0.6.5/go.mod h1:cIkSvK6W0q6N4U6n9KGz+QfRWQXAW0INd+1P3
 github.com/hugomods/icons v0.6.6/go.mod h1:cIkSvK6W0q6N4U6n9KGz+QfRWQXAW0INd+1P31gPNGg=
 github.com/twbs/icons v1.11.3 h1:XhvrQ1XDom9ggBbQx3wQCFGEr8qAQwQP/dAcw8OXMtA=
 github.com/twbs/icons v1.11.3/go.mod h1:GnRlymgVWp5iVJCMa0Me5b6tFyGpVc2bSxPMRGIJmyA=
+github.com/twbs/icons v1.13.1/go.mod h1:GnRlymgVWp5iVJCMa0Me5b6tFyGpVc2bSxPMRGIJmyA=