chore(deps): update golang:1.26 docker digest to e2ddb15 (#69)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang | stage | digest | `fb612b7` → `e2ddb15` |

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otlp-bench/bench-setup/Dockerfile.custom

@@ -3,7 +3,7 @@ FROM alpine:3.23@sha256:25109184c71bdad752c8312a8623239686a9a2071e8825f20acb8f21
 RUN apk --update add ca-certificates
 
 
-FROM golang:1.26@sha256:fb612b7831d53a89cbc0aaa7855b69ad7b0caf603715860cf538df854d047b84 AS build-stage
+FROM golang:1.26@sha256:e2ddb153f786ee6210bf8c40f7f35490b3ff7d38be70d1a0d358ba64225f6428 AS build-stage
 
 WORKDIR /build