Bump rubocop from 1.56.4 to 1.61.0

This version fixes false negatives for Lint/SymbolConversion when using
string interpolation, for Style/RedundantArgument when using the safe
navigation operator, for Style/RedundantParentheses when logical
operators are involved and for Style/RedundantReturn with lambda ending
with return. We're applying the new rules.

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.56.4 to 1.61.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop/rubocop/compare/v1.56.4...v1.61.0)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

app/controllers/admin/legislation/homepages_controller.rb

@@ -9,7 +9,7 @@ class Admin::Legislation::HomepagesController < Admin::Legislation::BaseControll
   def update
     if @process.update(process_params)
       link = legislation_process_path(@process)
-      redirect_back(fallback_location: (request.referer || root_path),
+      redirect_back(fallback_location: request.referer || root_path,
                     notice: t("admin.legislation.processes.update.notice", link: link))
     else
       flash.now[:error] = t("admin.legislation.processes.update.error")