chore(deps): bump golang from `04cf306` to `c4b696f` in /e2e (#3038)

Bumps golang from `04cf306` to `c4b696f`.

---
updated-dependencies:
- dependency-name: 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>

e2e/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21.6-bookworm@sha256:04cf306d01a03309934b49ac4b9f487abb8a054b71141fa53df6df482ab7d7eb as builder
+FROM golang:1.21.6-bookworm@sha256:c4b696f1b2bf7d42e02b62b160c3f81c39386e1c567603df8c514ad6ce93361d as builder
 
 ENV KUBECTL_VERSION="v1.28.3"
 ENV HELM_VERSION="v3.13.1"