Add changefiles for dependency cleanup

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: iclanton

common/changes/@microsoft/rush/dependency-cleanup_2026-04-17.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "Remove unused dependencies: replace `glob-escape` with `fast-glob`'s `escapePath`, replace `figures.pointer` with a named const, replace `builtin-modules` with `node:module.isBuiltin()`.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@microsoft/rush"
+}

common/changes/@rushstack/heft-config-file/dependency-cleanup_2026-04-17.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/heft-config-file",
+      "comment": "Remove `@ungap/structured-clone` polyfill; use native `structuredClone` (Node 18+).",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@rushstack/heft-config-file"
+}

common/changes/@rushstack/lockfile-explorer/dependency-cleanup_2026-04-17.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/lockfile-explorer",
+      "comment": "Remove open and `update-notifier` dependencies; use `Executable.spawn()` from `node-core-library` to launch the browser.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@rushstack/lockfile-explorer"
+}

common/changes/@rushstack/npm-check-fork/dependency-cleanup_2026-04-17.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/npm-check-fork",
+      "comment": "Remove giturl dependency; replace with original toHttpsUrl() implementation using the native URL class.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@rushstack/npm-check-fork"
+}

common/changes/@rushstack/rig-package/dependency-cleanup_2026-04-17.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@rushstack/rig-package",
+      "comment": "Replace `strip-json-comments` with `jju.parse()` for JSONC parsing.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@rushstack/rig-package"
+}