build(deps): bump golang in the docker group

Bumps the docker group with 1 update: golang.


Updates `golang` from 1.23.3-bookworm to 1.23.4-bookworm

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23.3-bookworm@sha256:3f3b9daa3de608f3e869cd2ff8baf21555cf0fca9fd34251b8f340f9b7c30ec5 as build
+FROM golang:1.23.4-bookworm@sha256:2e838582004fab0931693a3a84743ceccfbfeeafa8187e87291a1afea457ff7a as build
 WORKDIR /go/src/github.com/pomerium/cli
 
 # cache depedency downloads