Bump github.com/google/cel-go from 0.27.0 to 0.28.0 in /tools

Bumps [github.com/google/cel-go](https://github.com/google/cel-go) from 0.27.0 to 0.28.0.
- [Release notes](https://github.com/google/cel-go/releases)
- [Commits](google/cel-go@v0.27.0...v0.28.0)

---
updated-dependencies:
- dependency-name: github.com/google/cel-go
  dependency-version: 0.28.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tools/go.mod

@@ -4,7 +4,7 @@ go 1.25.8
 
 require (
 	github.com/bufbuild/protocompile v0.14.1
-	github.com/google/cel-go v0.27.0
+	github.com/google/cel-go v0.28.0
 	github.com/spf13/pflag v1.0.10
 	github.com/stretchr/testify v1.11.1
 	golang.org/x/sync v0.19.0

tools/go.sum

@@ -6,8 +6,8 @@ github.com/bufbuild/protocompile v0.14.1 h1:iA73zAf/fyljNjQKwYzUHD6AD4R8KMasmwa/
 github.com/bufbuild/protocompile v0.14.1/go.mod h1:ppVdAIhbr2H8asPk6k4pY7t9zB1OU5DoEw9xY/FUi1c=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/google/cel-go v0.27.0 h1:e7ih85+4qVrBuqQWTW4FKSqZYokVuc3HnhH5keboFTo=
-github.com/google/cel-go v0.27.0/go.mod h1:tTJ11FWqnhw5KKpnWpvW9CJC3Y9GK4EIS0WXnBbebzw=
+github.com/google/cel-go v0.28.0 h1:KjSWstCpz/MN5t4a8gnGJNIYUsJRpdi/r97xWDphIQc=
+github.com/google/cel-go v0.28.0/go.mod h1:X0bD6iVNR8pkROSOoHVdgTkzmRcosof7WQqCD6wcMc8=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=