chore(deps)(deps): bump golang in /gearbox in the docker-images group

Bumps the docker-images group in /gearbox with 1 update: golang.


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

---
updated-dependencies:
- dependency-name: golang
  dependency-version: 1.26-alpine
  dependency-type: direct:production
  dependency-group: docker-images
...

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

Author: dependabot[bot]

gearbox/Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Build Templ templates
-FROM golang:1.25-alpine AS templ-builder
+FROM golang:1.26-alpine AS templ-builder
 
 WORKDIR /build
 
@@ -13,7 +13,7 @@ COPY . .
 RUN templ generate
 
 # Stage 2: Build Go binary
-FROM golang:1.25-alpine AS go-builder
+FROM golang:1.26-alpine AS go-builder
 
 # Install build dependencies (gcc and musl-dev required for CGO/sqlite3)
 RUN apk add --no-cache git ca-certificates tzdata gcc musl-dev