docker: bump jauderho/golang from f359bdd to 42d9f86 (#568)

Bumps [jauderho/golang](https://github.com/jauderho/dockerfiles) from `f359bdd` to `42d9f86`.
- [Commits](https://github.com/jauderho/dockerfiles/commits)

---
updated-dependencies:
- dependency-name: jauderho/golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/jauderho/golang:1.23.1-alpine3.20@sha256:f359bddc4fee0ccaa6ce20e85aa96bb8b4c00382f62ee735c9eecf9897f19c88 AS build
+FROM ghcr.io/jauderho/golang:1.23.1-alpine3.20@sha256:42d9f86ead610f63263809bb4f52d5a2d7c74c80b81ff6e3ba066ad20922a895 AS build
 
 COPY . /go/src/github.com/jauderho/bl3auto
 WORKDIR /go/src/github.com/jauderho/bl3auto