release pipeline: fix ref arguments in invoking workflow (#17684)

Although #17669 fixed the permissions of the release pipeline to push new
commits, there was still an error when invoking the `build` workflow.

The format of the reference was changed in #17103 such that we're sending the
git ref (a SHA) and not the "--ref" argument required by the GH actions workflow
API, which in this case is apparently specially defined as "The branch or tag
name which contains the version of the workflow file you'd like to run" and not
what git calls a "ref".

This changeset:
* Removes the third-party action entirely so that we're using GitHub's own
  tooling. This removes one more thing from the supply chain to pin and ensures a
  1:1 mapping of args to what's documented by GitHub.
* Removes the `--ref` argument entirely, which causes it to default to the
  current branch that the release workflow is running on (which is always what
  we want).

.github/workflows/release.yml

@@ -139,12 +139,11 @@ jobs:
           echo "build-ref=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
 
       - name: Invoke build workflow
-        uses: benc-uk/workflow-dispatch@798e70c97009500150087d30d9f11c5444830385 # v1.2.2
-        with:
-          workflow: build
-          token: ${{ secrets.ELEVATED_GITHUB_TOKEN}}
-          inputs: '{"build-ref": "${{ steps.commit-change-push.outputs.build-ref }}", "make-prerelease": "false"}'
-          ref: ${{ steps.commit-change-push.outputs.build-ref }}
+        id: invoke-build
+        env:
+          GH_TOKEN: ${{ secrets.ELEVATED_GITHUB_TOKEN }}
+        run: |
+          gh workflow run build.yml --field build-ref=${{ steps.commit-change-push.outputs.build-ref }} --field make-prerelease=false
 
       - name: Revert notification channel
         if: ${{ github.event.inputs.notification-channel != '' }}