NO-ISSUE: Update module github.com/golangci/golangci-lint to v2.12.1

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

Author: red-hat-konflux[bot]

Dockerfile.assisted_installer_agent-build

@@ -2,7 +2,7 @@ FROM registry.access.redhat.com/ubi9/go-toolset:1.25 AS golang
 
 ENV GOFLAGS=""
 
-RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.8.0 && \
+RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.12.1 && \
         go install golang.org/x/tools/cmd/goimports@v0.34.0 && \
         go install github.com/onsi/ginkgo/ginkgo@v1.16.1 && \
         go install github.com/golang/mock/mockgen@v1.6.0 && \