chore(deps): update oven/bun docker tag to v1.2.15

Author: renovate[bot]

Dockerfile

@@ -1,6 +1,6 @@
 # use the official Bun image
 # see all versions at https://hub.docker.com/r/oven/bun/tags
-FROM oven/bun:1.2.14@sha256:5a4b539bfd3d93bb61e7c18321e0d8726eee930ef8076ffd06930ac7baa24c15 as base
+FROM oven/bun:1.2.15@sha256:8b5e8d3b6a734ae438c7c6f1bdc23e54eb9c35a0e2e3099ea2ca0ef781aca23b as base
 WORKDIR /usr/src/app
 
 # set environment variables