chore: bump github.com/open-policy-agent/opa in /constraint

Bumps [github.com/open-policy-agent/opa](https://github.com/open-policy-agent/opa) from 1.12.2 to 1.12.3.
- [Release notes](https://github.com/open-policy-agent/opa/releases)
- [Changelog](https://github.com/open-policy-agent/opa/blob/main/CHANGELOG.md)
- [Commits](open-policy-agent/opa@v1.12.2...v1.12.3)

---
updated-dependencies:
- dependency-name: github.com/open-policy-agent/opa
  dependency-version: 1.12.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

constraint/go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/golang/glog v1.2.5
 	github.com/google/go-cmp v0.7.0
 	github.com/onsi/gomega v1.39.0
-	github.com/open-policy-agent/opa v1.12.2
+	github.com/open-policy-agent/opa v1.12.3
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10
 	k8s.io/api v0.34.3

constraint/go.sum

@@ -153,8 +153,8 @@ github.com/onsi/ginkgo/v2 v2.25.3 h1:Ty8+Yi/ayDAGtk4XxmmfUy4GabvM+MegeB4cDLRi6nw
 github.com/onsi/ginkgo/v2 v2.25.3/go.mod h1:43uiyQC4Ed2tkOzLsEYm7hnrb7UJTWHYNsuy3bG/snE=
 github.com/onsi/gomega v1.39.0 h1:y2ROC3hKFmQZJNFeGAMeHZKkjBL65mIZcvrLQBF9k6Q=
 github.com/onsi/gomega v1.39.0/go.mod h1:ZCU1pkQcXDO5Sl9/VVEGlDyp+zm0m1cmeG5TOzLgdh4=
-github.com/open-policy-agent/opa v1.12.2 h1:Nh60UaIBP6NKCgy45jmMHZwNYALtNR9e/hj+Lna49mc=
-github.com/open-policy-agent/opa v1.12.2/go.mod h1:RnDgm04GA1RjEXJvrsG9uNT/+FyBNmozcPvA2qz60M4=
+github.com/open-policy-agent/opa v1.12.3 h1:qe3m/w52baKC/HJtippw+hYBUKCzuBCPjB+D5P9knfc=
+github.com/open-policy-agent/opa v1.12.3/go.mod h1:RnDgm04GA1RjEXJvrsG9uNT/+FyBNmozcPvA2qz60M4=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=