Bump the docker-deps group across 5 directories with 3 updates (#3832)

Bumps the docker-deps group with 1 update in the /examples/deployment/docker/db_server/postgresql directory: postgres.
Bumps the docker-deps group with 1 update in the /examples/deployment/docker/log_server directory: golang.
Bumps the docker-deps group with 1 update in the /examples/deployment/docker/log_signer directory: golang.
Bumps the docker-deps group with 1 update in the /examples/deployment/kubernetes/mysql/image directory: ubuntu.
Bumps the docker-deps group with 1 update in the /integration/cloudbuild/testbase directory: golang.


Updates `postgres` from 18.0 to 18.1

Updates `golang` from 1.25.3-bookworm to 1.25.4-bookworm

Updates `golang` from 1.25.3-bookworm to 1.25.4-bookworm

Updates `ubuntu` from `0950623` to `104ae83`

Updates `golang` from 1.25.3-bookworm to 1.25.4-bookworm

---
updated-dependencies:
- dependency-name: postgres
  dependency-version: '18.1'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: docker-deps
- dependency-name: golang
  dependency-version: 1.25.4-bookworm
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker-deps
- dependency-name: golang
  dependency-version: 1.25.4-bookworm
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker-deps
- dependency-name: ubuntu
  dependency-version: jammy
  dependency-type: direct:production
  dependency-group: docker-deps
- dependency-name: golang
  dependency-version: 1.25.4-bookworm
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker-deps
...

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

Author: dependabot[bot]

examples/deployment/docker/db_server/postgresql/Dockerfile

@@ -1,4 +1,4 @@
-FROM postgres:18.0@sha256:1ffc019dae94eca6b09a49ca67d37398951346de3c3d0cfe23d8d4ca33da83fb
+FROM postgres:18.1@sha256:5ec39c188013123927f30a006987c6b0e20f3ef2b54b140dfa96dac6844d883f
 
 # expects the build context to be: $GOPATH/src/github.com/google/trillian
 COPY storage/postgresql/schema/storage.sql /docker-entrypoint-initdb.d/storage.sql

examples/deployment/docker/log_server/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.25.3-bookworm@sha256:ee420c17fa013f71eca6b35c3547b854c838d4f26056a34eb6171bba5bf8ece4 as build
+FROM golang:1.25.4-bookworm@sha256:e17419604b6d1f9bc245694425f0ec9b1b53685c80850900a376fb10cb0f70cb as build
 
 WORKDIR /trillian
 

examples/deployment/docker/log_signer/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.25.3-bookworm@sha256:ee420c17fa013f71eca6b35c3547b854c838d4f26056a34eb6171bba5bf8ece4 as build
+FROM golang:1.25.4-bookworm@sha256:e17419604b6d1f9bc245694425f0ec9b1b53685c80850900a376fb10cb0f70cb as build
 
 WORKDIR /trillian
 

examples/deployment/kubernetes/mysql/image/Dockerfile

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:jammy@sha256:09506232a8004baa32c47d68f1e5c307d648fdd59f5e7eaa42aaf87914100db3
+FROM ubuntu:jammy@sha256:104ae83764a5119017b8e8d6218fa0832b09df65aae7d5a6de29a85d813da2fb
 
 # Patch the OS-level packages and remove unneeded dependencies.
 RUN apt-get update \

integration/cloudbuild/testbase/Dockerfile

@@ -1,5 +1,5 @@
 # This Dockerfile builds a base image for Trillan integration tests.
-FROM golang:1.25.3-bookworm@sha256:ee420c17fa013f71eca6b35c3547b854c838d4f26056a34eb6171bba5bf8ece4
+FROM golang:1.25.4-bookworm@sha256:e17419604b6d1f9bc245694425f0ec9b1b53685c80850900a376fb10cb0f70cb
 
 WORKDIR /testbase