deps(docker): bump projectquay/golang from 1.24 to 1.26

Bumps projectquay/golang from 1.24 to 1.26.

---
updated-dependencies:
- dependency-name: projectquay/golang
  dependency-version: '1.26'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Dockerfile.epp

@@ -1,6 +1,6 @@
 ## Minimal runtime Dockerfile (microdnf-only, no torch, wrapper in site-packages)
 # Go dependencies stage: download go modules and extract kv-cache
-FROM quay.io/projectquay/golang:1.25 AS go-deps
+FROM quay.io/projectquay/golang:1.26 AS go-deps
 
 WORKDIR /workspace
 
@@ -41,7 +41,7 @@ RUN python3.12 -m venv /workspace/kv-cache/build/venv && \
     fi
 
 # Go build stage
-FROM quay.io/projectquay/golang:1.25 AS go-builder
+FROM quay.io/projectquay/golang:1.26 AS go-builder
 
 ARG TARGETOS
 ARG TARGETARCH

Dockerfile.sidecar

@@ -1,5 +1,5 @@
 # Build Stage: using Go 1.25 image
-FROM quay.io/projectquay/golang:1.25 AS builder
+FROM quay.io/projectquay/golang:1.26 AS builder
 ARG TARGETOS
 ARG TARGETARCH
 ARG COMMIT_SHA=unknown