Update elastic-agent-system-metrics to v0.8.1

Update elastic-agent-system-metrics to v0.8.1 to enable collecting
memory and CPU metrics from privileged process on Windows.

NOTICE.txt

@@ -13026,11 +13026,11 @@ these terms.
 
 --------------------------------------------------------------------------------
 Dependency : github.com/elastic/elastic-agent-system-metrics
-Version: v0.8.0
+Version: v0.8.1
 Licence type (autodetected): Apache-2.0
 --------------------------------------------------------------------------------
 
-Contents of probable licence file $GOMODCACHE/github.com/elastic/[email protected].0/LICENSE.txt:
+Contents of probable licence file $GOMODCACHE/github.com/elastic/[email protected].1/LICENSE.txt:
 
                                  Apache License
                            Version 2.0, January 2004

go.mod

@@ -204,7 +204,7 @@ require (
 	github.com/elastic/elastic-agent-autodiscover v0.6.4
 	github.com/elastic/elastic-agent-libs v0.6.2
 	github.com/elastic/elastic-agent-shipper-client v0.5.1-0.20230228231646-f04347b666f3
-	github.com/elastic/elastic-agent-system-metrics v0.8.0
+	github.com/elastic/elastic-agent-system-metrics v0.8.1
 	github.com/elastic/go-elasticsearch/v8 v8.10.0
 	github.com/elastic/mito v1.6.0
 	github.com/elastic/toutoumomoma v0.0.0-20221026030040-594ef30cb640

go.sum

@@ -658,8 +658,8 @@ github.com/elastic/elastic-agent-libs v0.6.2 h1:tE5pFK4y7xm1FtXm+r+63G7STjJAaWh3
 github.com/elastic/elastic-agent-libs v0.6.2/go.mod h1:o+EySawBZGeYu49shJxerg2wRCimS1dhrD4As0MS700=
 github.com/elastic/elastic-agent-shipper-client v0.5.1-0.20230228231646-f04347b666f3 h1:sb+25XJn/JcC9/VL8HX4r4QXSUq4uTNzGS2kxOE7u1U=
 github.com/elastic/elastic-agent-shipper-client v0.5.1-0.20230228231646-f04347b666f3/go.mod h1:rWarFM7qYxJKsi9WcV6ONcFjH/NA3niDNpTxO+8/GVI=
-github.com/elastic/elastic-agent-system-metrics v0.8.0 h1:EsWbtd83JvnaqnL57bKS1E6GhOdemTRbxdFDcenR8zQ=
-github.com/elastic/elastic-agent-system-metrics v0.8.0/go.mod h1:9C1UEfj0P687HAzZepHszN6zXA+2tN2Lx3Osvq1zby8=
+github.com/elastic/elastic-agent-system-metrics v0.8.1 h1:eg6actuLeGJlIJFotHRdlAsz/3WhX2G8E0qI301IKBA=
+github.com/elastic/elastic-agent-system-metrics v0.8.1/go.mod h1:9C1UEfj0P687HAzZepHszN6zXA+2tN2Lx3Osvq1zby8=
 github.com/elastic/elastic-transport-go/v8 v8.0.0-20230329154755-1a3c63de0db6/go.mod h1:87Tcz8IVNe6rVSLdBux1o/PEItLtyabHU3naC7IoqKI=
 github.com/elastic/elastic-transport-go/v8 v8.3.0 h1:DJGxovyQLXGr62e9nDMPSxRyWION0Bh6d9eCFBriiHo=
 github.com/elastic/elastic-transport-go/v8 v8.3.0/go.mod h1:87Tcz8IVNe6rVSLdBux1o/PEItLtyabHU3naC7IoqKI=