docs: update maintaining-dependencies.md on major v8 update

lib/update-v8/index.js

@@ -6,11 +6,18 @@ import updateVersionNumbers from './updateVersionNumbers.js';
 import commitUpdate from './commitUpdate.js';
 import majorUpdate from './majorUpdate.js';
 import minorUpdate from './minorUpdate.js';
+import updateMaintainingDependencies from './updateMaintainingDependencies.js';
 import updateV8Clone from './updateV8Clone.js';
 
 export function major(options) {
   const tasks = new Listr(
-    [updateV8Clone(), majorUpdate(), commitUpdate(), updateVersionNumbers()],
+    [
+      updateV8Clone(),
+      majorUpdate(),
+      updateMaintainingDependencies(),
+      commitUpdate(),
+      updateVersionNumbers()
+    ],
     getOptions(options)
   );
   return tasks.run(options);

lib/update-v8/updateMaintainingDependencies.js

@@ -0,0 +1,34 @@
+import { promises as fs } from 'node:fs';
+import { getNodeV8Version } from './util.js';
+
+export default function updateMaintainingDependencies() {
+  return {
+    title: 'Update V8 version in maintaining-dependencies.md',
+    task: async(ctx) => {
+      const path = `${ctx.nodeDir}/doc/contributing/maintaining/maintaining-dependencies.md`;
+      let maintainingDependenciesMd = await fs.readFile(path, 'utf8');
+      const v8Version = (await getNodeV8Version(ctx.nodeDir)).toString();
+      const v8VersionNoDots = v8Version.replaceAll('.', '');
+      // V8 itemlist link
+      maintainingDependenciesMd = maintainingDependenciesMd.replace(
+        /\* \[V8.*/,
+        `* [V8 ${v8Version}][]`
+      );
+      // V8 link to section
+      maintainingDependenciesMd = maintainingDependenciesMd.replace(
+        /\[v8.*\]: #v8.*/,
+        `[v8 ${v8Version}]: #v8-${v8VersionNoDots}`
+      );
+      // V8 section title
+      maintainingDependenciesMd = maintainingDependenciesMd.replace(
+        /### V8.*/,
+        `### V8 ${v8Version}`
+      );
+      await fs.writeFile(path, maintainingDependenciesMd);
+      await ctx.execGitNode(
+        'add',
+        ['doc/contributing/maintaining/maintaining-dependencies.md']
+      );
+    }
+  };
+};