chore(deps): docker: bump the all-docker group across 1 directory with 2 updates

Bumps the all-docker group with 2 updates in the /agent directory: golang and python.


Updates `golang` from 1.26.3-bookworm to 1.26.4-bookworm

Updates `python` from 3.13-slim to 3.14.5-slim

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26.4-bookworm
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-docker
- dependency-name: python
  dependency-version: 3.14.5-slim
  dependency-type: direct:production
  dependency-group: all-docker
...

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

Author: dependabot[bot]

agent/Dockerfile

@@ -4,11 +4,11 @@ ARG GH_VERSION=2.93.0
 FROM --platform=$TARGETPLATFORM jdxcode/mise:latest AS mise
 
 # Build gh with a patched Go toolchain; upstream packages can lag Go CVE fixes.
-FROM --platform=$TARGETPLATFORM golang:1.26.3-bookworm AS gh-builder
+FROM --platform=$TARGETPLATFORM golang:1.26.4-bookworm AS gh-builder
 ARG GH_VERSION
 RUN GOPROXY=direct GOBIN=/out go install "github.com/cli/cli/v2/cmd/gh@v${GH_VERSION}"
 
-FROM --platform=$TARGETPLATFORM python:3.13-slim@sha256:dc1546eefcbe8caaa1f004f16ab76b204b5e1dbd58ff81b899f21cd40541232f
+FROM --platform=$TARGETPLATFORM python:3.14.5-slim@sha256:c845af9399020c7e562969a13689e929074a10fd057acd1b1fad06a2fb068e97
 
 # Install mise (polyglot dev tool manager)
 COPY --from=mise /usr/local/bin/mise /usr/local/bin/mise