Bump golang from 1.23.5-alpine3.20 to 1.23.6-alpine3.20 in /test/fakeintake (#33895)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

test/fakeintake/Dockerfile

@@ -2,7 +2,7 @@
 # syntax=docker/dockerfile:1
 
 ## Build
-FROM golang:1.23.5-alpine3.20 AS build
+FROM golang:1.23.6-alpine3.20 AS build
 
 # need gcc to build with CGO_ENABLED=1
 # need musl-dev to get stdlib.h