ci(deps): bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -211,7 +211,7 @@ jobs:
 
       - name: Upload test artifacts
         if: failure()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: test-results-go-${{ matrix.go }}
           path: |

Dockerfile

@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.26-alpine AS builder
+FROM golang:1.25-alpine AS builder
 
 # Install git and ca-certificates (needed for fetching dependencies and HTTPS)
 RUN apk add --no-cache git ca-certificates tzdata file

Dockerfile.dev

@@ -2,7 +2,7 @@
 # Uses Alpine instead of scratch for debugging
 
 # Build stage - same as production
-FROM golang:1.26-alpine AS builder
+FROM golang:1.25-alpine AS builder
 
 # Install git and ca-certificates (needed for fetching dependencies and HTTPS)
 RUN apk add --no-cache git ca-certificates tzdata file