Bump golang.org/x/sys from 0.42.0 to 0.43.0

Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.42.0 to 0.43.0.
- [Commits](golang/sys@v0.42.0...v0.43.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sys
  dependency-version: 0.43.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -2,4 +2,4 @@ module github.com/emmansun/sm9
 
 go 1.25.0
 
-require golang.org/x/sys v0.42.0
+require golang.org/x/sys v0.43.0

go.sum

@@ -1,2 +1,2 @@
-golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
-golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
+golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=