chore(deps): update registry.redhat.io/ubi9/go-toolset:9.7 docker digest to 71f121a

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@sha256:71f121a44270e46a17a548d6b92096a1a0fb56db44927ad318d095177d6dce4b AS build-env
 
 ENV GOEXPERIMENT=strictfipsruntime
 ENV CGO_ENABLED=1