Bump golang in /integration in the all-deps group

Bumps the all-deps group in /integration with 1 update: golang.


Updates `golang` from `45b4337` to `1a26d5a`

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

integration/Dockerfile

@@ -1,5 +1,5 @@
 # This Dockerfile builds a base image for the CloudBuild integration testing.
-FROM golang:1.23.1-bullseye@sha256:45b43371f21ec51276118e6806a22cbb0bca087ddd54c491fdc7149be01035d5 AS testbase
+FROM golang:1.23.1-bullseye@sha256:1a26d5ad2e9bdbe9206f1db3035dbf90ad2b4ad09ccbbbcf5ec0c4e56bbe77d1 AS testbase
 
 WORKDIR /testbase