Upgrade @metalsmith/layouts to version 3.0.0

This is a major version bump, and the changelog at
https://github.com/metalsmith/layouts/releases/tag/v3.0.0
indicates a breaking change that impacts us, namely that we need to
explicitly define the pattern and transformer that we wish to use.

gulpfile.mjs

@@ -2266,6 +2266,8 @@ gulp.task("metalsmith", async function () {
       .use(
         layouts({
           directory: "docs/templates",
+          pattern: "**",
+          transform: "nunjucks",
         })
       )
       .use(relative())

package-lock.json

@@ -12,7 +12,7 @@
         "@babel/runtime": "^7.26.10",
         "@fluent/bundle": "^0.18.0",
         "@fluent/dom": "^0.10.0",
-        "@metalsmith/layouts": "^2.7.0",
+        "@metalsmith/layouts": "^3.0.0",
         "@metalsmith/markdown": "^1.10.0",
         "@napi-rs/canvas": "^0.1.68",
         "@types/node": "^22.13.10",
@@ -2195,18 +2195,17 @@
       }
     },
     "node_modules/@metalsmith/layouts": {
-      "version": "2.7.0",
+      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@metalsmith/layouts/-/layouts-2.7.0.tgz",
+      "resolved": "https://registry.npmjs.org/@metalsmith/layouts/-/layouts-3.0.0.tgz",
-      "integrity": "sha512-VG5ldPSsTxUvHqFQo0u5mjWtS2IUUOqYKHvWnEHKol1UhaXhhYBYSnG0D8kjk+XzGw+mWxNfv/JoAhg94filXA==",
+      "integrity": "sha512-5rOquSdfdQ9Nx++4gEIOZ8BDV0NuudthgV+itIJK/wgGRrFsmq2+3xQrbsX94oY73+KPJA5h638IU7Qp1nmTpQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "inputformat-to-jstransformer": "^1.4.0",
         "is-utf8": "^0.2.1",
         "jstransformer": "^1.0.0"
       },
       "engines": {
-        "node": ">=12.0.0"
+        "node": ">=14.18.0"
       },
       "peerDependencies": {
         "metalsmith": "^2.4.1"
@@ -7130,19 +7129,6 @@
       "integrity": "sha512-iKpRpXP+CrP2jyrxvg1kMUpXDyRUFDWurxbnVT1vQPx+Wz9uCYsMIqYuSBLV+PAaZG/d7kRLKRFc9oDMsH+mFQ==",
       "dev": true
     },
-    "node_modules/inputformat-to-jstransformer": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/inputformat-to-jstransformer/-/inputformat-to-jstransformer-1.4.0.tgz",
-      "integrity": "sha512-Ub+Wjb0mjaND4IS/GDvQ+TEyd1i9U4OdrF58mBY7QTYu8CK5K34DPV7mrvo/WQBJLj7UJWQc7QAmFb7CbQ5lLw==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "require-one": "^1.0.3"
-      },
-      "engines": {
-        "node": ">=4"
-      }
-    },
     "node_modules/internal-slot": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/internal-slot/-/internal-slot-1.0.7.tgz",
@@ -10313,13 +10299,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/require-one": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/require-one/-/require-one-1.0.3.tgz",
-      "integrity": "sha512-5nXixwgbAZfQ65g7fXv5fDXYRiKByOT1NT3EffS+0W/1MoF+Lkbsly3MXIlPIAgEtspX5fWAbXnp6d4BNMx+xQ==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/requizzle": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/requizzle/-/requizzle-0.2.3.tgz",

package.json

@@ -7,7 +7,7 @@
     "@babel/runtime": "^7.26.10",
     "@fluent/bundle": "^0.18.0",
     "@fluent/dom": "^0.10.0",
-    "@metalsmith/layouts": "^2.7.0",
+    "@metalsmith/layouts": "^3.0.0",
     "@metalsmith/markdown": "^1.10.0",
     "@napi-rs/canvas": "^0.1.68",
     "@types/node": "^22.13.10",