fix(docs-site): pin @astrojs/sitemap to ~3.2.1 for Astro 4 compat

sitemap 3.7.3 reads opts.routes from astro:build:done, which only exists in
Astro 5; on Astro 4.16 it is undefined and crashes the build with
'Cannot read properties of undefined (reading reduce)'. Pin to the 3.2.x line
and lock it so the docs-site build completes.

docs-site/package-lock.json

@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "dependencies": {
         "@astrojs/mdx": "^3.0.0",
-        "@astrojs/sitemap": "^3.1.0",
+        "@astrojs/sitemap": "~3.2.1",
         "astro": "^4.8.0",
         "redoc": "^2.1.5"
       },
@@ -96,14 +96,23 @@
       }
     },
     "node_modules/@astrojs/sitemap": {
-      "version": "3.7.3",
-      "resolved": "https://registry.npmjs.org/@astrojs/sitemap/-/sitemap-3.7.3.tgz",
-      "integrity": "sha512-f8euLVsyeAmAkSm/1M2Kb8sL8byQmfgbvBNaHFItCheTj/IpiJYSEWVcqDHZ/yEHxiS7+w87mQkzwZaPHmk5GA==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/@astrojs/sitemap/-/sitemap-3.2.1.tgz",
+      "integrity": "sha512-uxMfO8f7pALq0ADL6Lk68UV6dNYjJ2xGUzyjjVj60JLBs5a6smtlkBYv3tQ0DzoqwS7c9n4FUx5lgv0yPo/fgA==",
       "license": "MIT",
       "dependencies": {
-        "sitemap": "^9.0.0",
+        "sitemap": "^8.0.0",
         "stream-replace-string": "^2.0.0",
-        "zod": "^4.3.6"
+        "zod": "^3.23.8"
+      }
+    },
+    "node_modules/@astrojs/sitemap/node_modules/zod": {
+      "version": "3.25.76",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
       }
     },
     "node_modules/@astrojs/telemetry": {
@@ -6628,24 +6637,30 @@
       "license": "MIT"
     },
     "node_modules/sitemap": {
-      "version": "9.0.1",
-      "resolved": "https://registry.npmjs.org/sitemap/-/sitemap-9.0.1.tgz",
-      "integrity": "sha512-S6hzjGJSG3d6if0YoF5kTyeRJvia6FSTBroE5fQ0bu1QNxyJqhhinfUsXi9fH3MgtXODWvwo2BDyQSnhPQ88uQ==",
+      "version": "8.0.3",
+      "resolved": "https://registry.npmjs.org/sitemap/-/sitemap-8.0.3.tgz",
+      "integrity": "sha512-9Ew1tR2WYw8RGE2XLy7GjkusvYXy8Rg6y8TYuBuQMfIEdGcWoJpY2Wr5DzsEiL/TKCw56+YKTCCUHglorEYK+A==",
       "license": "MIT",
       "dependencies": {
-        "@types/node": "^24.9.2",
+        "@types/node": "^17.0.5",
         "@types/sax": "^1.2.1",
         "arg": "^5.0.0",
         "sax": "^1.4.1"
       },
       "bin": {
-        "sitemap": "dist/esm/cli.js"
+        "sitemap": "dist/cli.js"
       },
       "engines": {
-        "node": ">=20.19.5",
-        "npm": ">=10.8.2"
+        "node": ">=14.0.0",
+        "npm": ">=6.0.0"
       }
     },
+    "node_modules/sitemap/node_modules/@types/node": {
+      "version": "17.0.45",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.45.tgz",
+      "integrity": "sha512-w+tIMs3rq2afQdsPJlODhoUEKzFP1ayaoyl1CcnwtIlsVe7K7bA1NGm4s3PraqTLlXnbIN84zuBlxBWo1u9BLw==",
+      "license": "MIT"
+    },
     "node_modules/slugify": {
       "version": "1.4.7",
       "resolved": "https://registry.npmjs.org/slugify/-/slugify-1.4.7.tgz",
@@ -7524,6 +7539,7 @@
       "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
       "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
       "license": "MIT",
+      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }

docs-site/package.json

@@ -8,9 +8,9 @@
     "preview": "astro preview"
   },
   "dependencies": {
-    "astro": "^4.8.0",
     "@astrojs/mdx": "^3.0.0",
-    "@astrojs/sitemap": "^3.1.0",
+    "@astrojs/sitemap": "~3.2.1",
+    "astro": "^4.8.0",
     "redoc": "^2.1.5"
   },
   "devDependencies": {