Update registry.redhat.io/ubi9/go-toolset:9.6 Docker digest to 6f0e6c5

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:9.6@sha256:7b1828de52c3bac600a71b81996bf748776a456181a45e2b329b39702cf6486f AS build-env
+FROM registry.redhat.io/ubi9/go-toolset:9.6@sha256:6f0e6c534d6b785530f7961089f444bbb14d384bfa3ea09070f5a70029b4a5cb AS build-env
 
 ENV GOEXPERIMENT=strictfipsruntime
 ENV CGO_ENABLED=1