Bump golang.org/x/mod

Bumps the extractor-dependencies group in /go/extractor with 1 update: [golang.org/x/mod](https://github.com/golang/mod).


Updates `golang.org/x/mod` from 0.27.0 to 0.28.0
- [Commits](golang/mod@v0.27.0...v0.28.0)

---
updated-dependencies:
- dependency-name: golang.org/x/mod
  dependency-version: 0.28.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: extractor-dependencies
...

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

Author: dependabot[bot]

go/extractor/go.mod

@@ -9,7 +9,7 @@ toolchain go1.25.0
 // when adding or removing dependencies, run
 //    bazel mod tidy
 require (
-	golang.org/x/mod v0.27.0
+	golang.org/x/mod v0.28.0
 	golang.org/x/tools v0.36.0
 )
 

go/extractor/go.sum

@@ -1,7 +1,7 @@
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
-golang.org/x/mod v0.27.0/go.mod h1:rWI627Fq0DEoudcK+MBkNkCe0EetEaDSwJJkCcjpazc=
+golang.org/x/mod v0.28.0 h1:gQBtGhjxykdjY9YhZpSlZIsbnaE2+PgjfLWUQTnoZ1U=
+golang.org/x/mod v0.28.0/go.mod h1:yfB/L0NOf/kmEbXjzCPOx1iK1fRutOydrCMsqRhEBxI=
 golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
 golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=