fix: upgrade @astrojs/sitemap to 3.7.1 to resolve Astro 6 build failure

[Copilot]

Astro 6's prerender chunks emit import * as z from 'zod/v4' at runtime. With @astrojs/sitemap@3.7.0 installed, the top-level node_modules/zod resolved to 3.25.76, whose /v4 subpath exports function from the core layer (not the classic wrapper) — so z.function() instances lack .optional(), causing the build to abort during static route generation.

Changes

• package.json: bump @astrojs/sitemap from ^3.7.0 → ^3.7.1
• package-lock.json: regenerated; top-level zod now resolves to 4.3.6 (promoted by @astrojs/sitemap@3.7.1's updated peer dep zod@^4.3.6)

@astrojs/sitemap@3.7.1 also migrates its own schema to the Zod v4 API, replacing the now-removed .args()/.returns() with the v4 { input, output } object form:

// 3.7.0 (Zod v3 API — breaks under zod@4.x)
filter: z.function().args(z.string()).returns(z.boolean()).optional()

// 3.7.1 (Zod v4 API)
filter: z.function({ input: [z.string()], output: z.boolean() }).optional()

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node ./node_modules/.bin/astro build git conf�� get --global k/_temp/ghcca-node/node/bin/bash credential.helpenpm (dns block)
• www.npmjs.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

I've updated to Astro version 6, which has caused my site to no longer build. There are experimental features that need to be changed/removed. Please fix them, and ensure that both the GitHub pages workflow run and pass and the dockerbuild workflow.

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