chore: use automatic crates.io token

Author: nyurik

.github/workflows/ci.yml

@@ -84,6 +84,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+      id-token: write
       pull-requests: write
     concurrency:
       group: release-plz-${{ github.ref }}
@@ -98,7 +99,6 @@ jobs:
         with: { command: release }
         env:
           GITHUB_TOKEN: ${{ secrets.RELEASE_PLZ_TOKEN }}
-          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
       - if: ${{ steps.release.outputs.releases_created == 'false' }}
         name: If version is the same, create a PR proposing new version and changelog for the next release
         uses: release-plz/action@v0.5