Bump github.com/shirou/gopsutil

Bumps [github.com/shirou/gopsutil](https://github.com/shirou/gopsutil) from 2.20.4+incompatible to 2.20.6+incompatible.
- [Release notes](https://github.com/shirou/gopsutil/releases)
- [Commits](shirou/gopsutil@v2.20.4...v2.20.6)

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

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/mattn/go-encoding v0.0.2
 	github.com/mattn/go-zglob v0.0.1
 	github.com/natefinch/atomic v0.0.0-20150920032501-a62ce929ffcc
-	github.com/shirou/gopsutil v2.20.4+incompatible
+	github.com/shirou/gopsutil v2.20.6+incompatible
 	github.com/stretchr/testify v1.6.1
 	github.com/tatsushid/go-fastping v0.0.0-20160109021039-d7bb493dee3e
 	github.com/ziutek/mymysql v1.5.4

go.sum

@@ -173,6 +173,8 @@ github.com/prometheus/procfs v0.0.5/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDa
 github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYeAmZ5ZIpBWTGllZSQnw97Dj+woV0toclVaRGI8pc=
 github.com/shirou/gopsutil v2.20.4+incompatible h1:cMT4rxS55zx9NVUnCkrmXCsEB/RNfG9SwHY9evtX8Ng=
 github.com/shirou/gopsutil v2.20.4+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
+github.com/shirou/gopsutil v2.20.6+incompatible h1:P37G9YH8M4vqkKcwBosp+URN5O8Tay67D2MbR361ioY=
+github.com/shirou/gopsutil v2.20.6+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
 github.com/sirupsen/logrus v1.0.4-0.20170822132746-89742aefa4b2/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/sirupsen/logrus v1.4.1 h1:GL2rEmy6nsikmW0r8opw9JIRScdMF5hA8cOYLH7In1k=
 github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=