build(deps): bump golang.org/x/sys from 0.18.0 to 0.21.0

Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.18.0 to 0.21.0.
- [Commits](golang/sys@v0.18.0...v0.21.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sys
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/vanilla-os/orchid v0.5.0
 	github.com/vanilla-os/prometheus v1.0.0
 	github.com/vanilla-os/sdk v0.0.0-20240424182549-7fbf2ce02046
-	golang.org/x/sys v0.18.0
+	golang.org/x/sys v0.21.0
 )
 
 require (

go.sum

@@ -273,8 +273,6 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/letsencrypt/boulder v0.0.0-20240104140712-c1f7de06e9f8 h1:VhZp18bDTiwcMExEJnuajfgtjMx03bh/NH7qIplYfdc=
 github.com/letsencrypt/boulder v0.0.0-20240104140712-c1f7de06e9f8/go.mod h1:rS3/odUsNpJzEb3gCFNAL32rFXDS4kLeS28vd2x8NfQ=
-github.com/linux-immutability-tools/EtcBuilder v1.2.1 h1:QMdfJlY6tSbXJB15J0RW2LP9/SpLRxlrHV2OXyCtl4Y=
-github.com/linux-immutability-tools/EtcBuilder v1.2.1/go.mod h1:8w35gZFffSCYGd17EcIQtaGcovwxgM5KsFqT04fhVac=
 github.com/linux-immutability-tools/EtcBuilder v1.3.0 h1:UefNKM1uN20WkyqvbXuxV38IquWyTrfCEwXasdhR4Qc=
 github.com/linux-immutability-tools/EtcBuilder v1.3.0/go.mod h1:8w35gZFffSCYGd17EcIQtaGcovwxgM5KsFqT04fhVac=
 github.com/lithammer/fuzzysearch v1.1.8 h1:/HIuJnjHuXS8bKaiTMeeDlW2/AyIWk2brx1V8LFgLN4=
@@ -590,8 +588,8 @@ golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
-golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=