chore: migrate Changesets to v3 (#4139)

Co-authored-by: Chris Swithinbank <[email protected]>

.changeset/config.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://unpkg.com/@changesets/config@2.3.0/schema.json",
+  "$schema": "https://unpkg.com/@changesets/config@4.0.0/schema.json",
   "changelog": [
     "@changesets/changelog-github",
     { "repo": "withastro/starlight" }
@@ -9,7 +9,6 @@
   "access": "public",
   "baseBranch": "origin/main",
   "updateInternalDependencies": "patch",
-  "ignore": ["starlight-docs", "@example/*", "starlight-file-icons-generator", "@e2e/*"],
   "___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
     "onlyUpdatePeerDependentsWhenOutOfRange": true
   }

.github/workflows/release.yml

@@ -36,12 +36,10 @@ jobs:
         run: pnpm i
 
       - name: Create Release Pull Request
-        uses: changesets/action@a45c4d594aa4e2c509dc14a9f2b3b67ba3780d0d # v1.9.0
+        uses: changesets/action@8488615a623b1b9c987934bb89eae8af6a946ac1 # v2.1.1
         with:
-          version: pnpm run version
-          publish: pnpm changeset publish
-          commit: '[ci] release'
-          title: '[ci] release'
-        env:
-          GITHUB_TOKEN: ${{ secrets.FREDKBOT_GITHUB_TOKEN }}
-          NPM_TOKEN: "" # See https://github.com/changesets/changesets/issues/1152#issuecomment-3190884868
+          version-script: pnpm run version
+          publish-script: pnpm changeset publish
+          commit-message: '[ci] release'
+          pr-title: '[ci] release'
+          github-token: ${{ secrets.FREDKBOT_GITHUB_TOKEN }}

package.json

@@ -14,8 +14,8 @@
   "license": "MIT",
   "devDependencies": {
     "@astrojs/check": "^0.9.10",
-    "@changesets/changelog-github": "^0.6.0",
-    "@changesets/cli": "^2.31.0",
+    "@changesets/changelog-github": "^1.0.0",
+    "@changesets/cli": "^3.0.1",
     "@eslint/js": "^10.0.1",
     "@size-limit/file": "^12.1.0",
     "astro": "^7.1.6",
@@ -29,7 +29,7 @@
     "typescript": "^6.0.3",
     "typescript-eslint": "^8.59.2"
   },
-  "packageManager": "pnpm@11.1.1",
+  "packageManager": "pnpm@11.22.0",
   "size-limit": [
     {
       "name": "/index.html",