sorbet: Run brew typecheck --update --suggest-typed on schedule in CI

- No idea if this works, let's experiment.
- Suggested in https://github.com/Homebrew/brew/pull/14893#issuecomment-1456040533.

.github/workflows/sorbet.yml

@@ -52,12 +52,17 @@ jobs:
             git checkout --no-track -B "${BRANCH}" origin/master
           fi
 
-          brew typecheck --update
+          brew typecheck --update --suggest-typed
           if ! git diff --stat --exit-code "Library/Homebrew/sorbet"
           then
             git add "Library/Homebrew/sorbet"
             git commit -m "sorbet: Update RBI files." \
                        -m "Autogenerated by the [sorbet](https://github.com/Homebrew/brew/blob/master/.github/workflows/sorbet.yml) workflow."
+
+            git add "**/.rb"
+            git commit -m "sorbet: Autobump sigils via Spoom" \
+                       -m "Autogenerated by the [sorbet](https://github.com/Homebrew/brew/blob/master/.github/workflows/sorbet.yml) workflow."
+
             echo "committed=true" >> $GITHUB_OUTPUT
             PULL_REQUEST_STATE="$(gh pr view --json=state | jq -r ".state")"
             if [[ "${PULL_REQUEST_STATE}" != "OPEN" ]]