chore(deps)(deps): bump the docker-images group

Bumps the docker-images group in /gearbox-agent with 2 updates: golang and alpine.


Updates `golang` from 1.25-alpine to 1.26-alpine

Updates `alpine` from `865b95f` to `2510918`

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26-alpine
  dependency-type: direct:production
  dependency-group: docker-images
- dependency-name: alpine
  dependency-version: '3.23'
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker-images
...

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

Author: dependabot[bot]

gearbox-agent/Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Build Go binary
-FROM golang:1.25-alpine AS go-builder
+FROM golang:1.26-alpine AS go-builder
 
 # Install build dependencies (git for go modules, ca-certificates, tzdata for runtime)
 RUN apk add --no-cache git ca-certificates tzdata
@@ -25,7 +25,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build \
     ./cmd/gearbox-agent
 
 # Stage 2: Final runtime image
-FROM alpine:3.23@sha256:865b95f46d98cf867a156fe4a135ad3fe50d2056aa3f25ed31662dff6da4eb62
+FROM alpine:3.23@sha256:25109184c71bdad752c8312a8623239686a9a2071e8825f20acb8f2198c3f659
 
 # Install runtime dependencies
 RUN apk add --no-cache ca-certificates tzdata