🌱(deps): Bump golang.org/x/mod in the all-go-deps group (#209)

Bumps the all-go-deps group 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: all-go-deps
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

go.mod

@@ -1,10 +1,8 @@
 module github.com/transparency-dev/formats
 
-go 1.23.0
-
-toolchain go1.23.7
+go 1.24.0
 
 require (
 	github.com/google/go-cmp v0.7.0
-	golang.org/x/mod v0.27.0
+	golang.org/x/mod v0.28.0
 )

go.sum

@@ -1,4 +1,4 @@
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-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=