☕ chore: Bump oven/bun from 1.3.12-slim to 1.3.13-slim

Bumps oven/bun from 1.3.12-slim to 1.3.13-slim.

---
updated-dependencies:
- dependency-name: oven/bun
  dependency-version: 1.3.13-slim
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # ── Stage 1: Install + Build ────────────────────────────────────────
-FROM oven/bun:1.3.12 AS builder
+FROM oven/bun:1.3.13 AS builder
 
 WORKDIR /app
 
@@ -45,7 +45,7 @@ COPY . .
 RUN bun run build
 
 # ── Stage 2: Production ─────────────────────────────────────────────
-FROM oven/bun:1.3.12-slim AS production
+FROM oven/bun:1.3.13-slim AS production
 
 WORKDIR /app