chore(deps): update golang docker tag to v1.23.6 (release-1.3) (#4410)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # setup build image
-FROM golang:1.23.5@sha256:51a6466e8dbf3e00e422eb0f7a97ac450b2d57b33617bbe8d2ee0bddcd9d0d37 AS operator-build
+FROM golang:1.23.6@sha256:958bd2e45b2d6d166aa0e33ee737093fe0c773c89c3fc142f26ac65ec37507cd AS operator-build
 
 RUN --mount=type=cache,target=/var/cache/apt \
     apt-get update && apt-get install -y libbtrfs-dev libdevmapper-dev