chore(deps): update golang:1.25 docker digest to 8ac6fe1 (open-telemetry#43208)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang | stage | digest | `d709837` -> `8ac6fe1` |
| golang | final | digest | `d709837` -> `8ac6fe1` |

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exporter/clickhouseexporter/example/Dockerfile

@@ -1,7 +1,7 @@
 FROM alpine:latest@sha256:4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1 AS certs
 RUN apk --update add ca-certificates
 
-FROM golang:latest@sha256:d7098379b7da665ab25b99795465ec320b1ca9d4addb9f77409c4827dc904211
+FROM golang:latest@sha256:8ac6fe1ced1b17cece9c2ed3368c73bcd6374da18ad054c5b5a86ffba6db2869
 
 ARG USER_UID=10001
 USER ${USER_UID}

exporter/loadbalancingexporter/example/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.25@sha256:d7098379b7da665ab25b99795465ec320b1ca9d4addb9f77409c4827dc904211 AS build
+FROM golang:1.25@sha256:8ac6fe1ced1b17cece9c2ed3368c73bcd6374da18ad054c5b5a86ffba6db2869 AS build
 
 WORKDIR /src
 ADD . /src