Bump github.com/spf13/viper from 1.7.1 to 1.8.1 in /lib

lib/go.mod

@@ -4,27 +4,16 @@ go 1.13
 
 require (
 	github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d // indirect
-	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/gdamore/tcell/v2 v2.0.1-0.20201017141208-acf90d56d591
 	github.com/go-ole/go-ole v1.2.4 // indirect
 	github.com/google/go-cmp v0.5.5
-	github.com/magiconair/properties v1.8.4 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/mitchellh/mapstructure v1.4.0 // indirect
 	github.com/olekukonko/tablewriter v0.0.5
-	github.com/pelletier/go-toml v1.8.1 // indirect
 	github.com/pkg/errors v0.9.1
 	github.com/rivo/tview v0.0.0-20201204190810-5406288b8e4e
 	github.com/shirou/gopsutil v3.21.4+incompatible
 	github.com/sirupsen/logrus v1.8.1
 	github.com/sony/sonyflake v1.0.0
-	github.com/spf13/afero v1.5.1 // indirect
-	github.com/spf13/cast v1.3.1 // indirect
-	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/spf13/viper v1.7.1
+	github.com/spf13/viper v1.8.1
 	github.com/tklauser/go-sysconf v0.3.4 // indirect
-	golang.org/x/text v0.3.4 // indirect
-	gopkg.in/ini.v1 v1.62.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 )