chore(deps): update registry.redhat.io/ubi9/go-toolset:9.7 docker digest to 6234f57

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

Dockerfile.gitsign.rh

@@ -1,5 +1,5 @@
 # Build stage
-FROM registry.redhat.io/ubi9/go-toolset:9.7@sha256:380d6de9bbc5a42ca13d425be99958fb397317664bb8a00e49d464e62cc8566c AS build-env
+FROM registry.redhat.io/ubi9/go-toolset:9.7@sha256:6234f572204d672a0ee0686d748fbb9b7b05679368bf0d7a4446e13970e58060 AS build-env
 
 ENV GOEXPERIMENT=strictfipsruntime
 ENV CGO_ENABLED=1