Update github.com/pkg/browser commit hash to 681adbf (#244)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/google/wire v0.5.0
 	github.com/int128/listener v1.1.0
-	github.com/pkg/browser v0.0.0-20210904010418-6d279e18f982
+	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8
 	github.com/spf13/cobra v1.2.1
 	github.com/spf13/pflag v1.0.5
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c

go.sum

@@ -354,8 +354,8 @@ github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/9
 github.com/pelletier/go-toml v1.9.3/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
 github.com/peterbourgon/diskv v2.0.1+incompatible h1:UBdAOUP5p4RWqPBg048CAvpKN+vxiaj6gdUUzhl4XmI=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
-github.com/pkg/browser v0.0.0-20210904010418-6d279e18f982 h1:TdFv+3Gr3GaghJ/o80aulO4ian7GHGWMdLBXoLZH1Is=
-github.com/pkg/browser v0.0.0-20210904010418-6d279e18f982/go.mod h1:HKlIX3XHQyzLZPlr7++PzdhaXEj94dEiJgZDTsxEqUI=
+github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 h1:KoWmjvw+nsYOo29YJK9vDA65RGE3NrOnUtO7a+RF9HU=
+github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8/go.mod h1:HKlIX3XHQyzLZPlr7++PzdhaXEj94dEiJgZDTsxEqUI=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=