Update dependency open-policy-agent/opa to v1.12.3

Author: renovate[bot]

confbatstest/Dockerfile_build

@@ -28,7 +28,7 @@ ARG JQ_VERSION=1.6
 # renovate: datasource=repology depName=homebrew/openshift-cli
 ARG OC_VERSION=4.20.6
 # renovate: datasource=github-releases depName=open-policy-agent/opa
-ARG OPA_VERSION=v1.11.0
+ARG OPA_VERSION=v1.12.3
 # renovate: datasource=github-releases depName=open-policy-agent/conftest
 ARG CONFTEST_VERSION=v0.65.0
 # renovate: datasource=github-releases depName=instrumenta/kubeval