ci: migrate npm publish to OIDC (#269)

Author: atomiks

.changeset/late-mice-think.md

@@ -0,0 +1,5 @@
+---
+"rehype-pretty-code": patch
+---
+
+chore: fix npm OIDC trusted publishing workflow

.github/workflows/release.yml

@@ -52,7 +52,8 @@ jobs:
         uses: actions/setup-node@v4
         with:
           cache: 'pnpm'
-          node-version: 'lts/*'
+          # Required for npm OIDC trusted publishing (npm >= 11.5.1), while staying on Node 24.
+          node-version: '^24.14.0'
           registry-url: 'https://registry.npmjs.org'
 
       - name: 'Install Dependencies'
@@ -82,7 +83,7 @@ jobs:
           commit: "[ci] release"
           title: "[ci] release"
         env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-          NPM_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # Workaround for changesets/action requiring this var to be set.
+          # OIDC trusted publishing does not use an npm token secret.
+          NPM_TOKEN: ""