build(deps): bump github.com/pkg/errors from 0.8.1 to 0.9.1 (#471)

Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.8.1 to 0.9.1.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](pkg/errors@v0.8.1...v0.9.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/mitchellh/mapstructure v1.1.2
 	github.com/ory/fosite v0.30.2
-	github.com/pkg/errors v0.8.1
+	github.com/pkg/errors v0.9.1
 	github.com/pkg/xattr v0.4.1
 	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
 	github.com/rs/cors v1.7.0

go.sum

@@ -143,6 +143,8 @@ github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/xattr v0.4.1 h1:dhclzL6EqOXNaPDWqoeb9tIxATfBSmjqL0b4DpSjwRw=
 github.com/pkg/xattr v0.4.1/go.mod h1:W2cGD0TBEus7MkUgv0tNZ9JutLtVO3cXu+IBRuHqnFs=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=