Bump rubocop from 1.71.2 to 1.75.8

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.71.2 to 1.75.8.
- [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/v1.71.2...v1.75.8)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-version: 1.75.8
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Notes:

This commit also includes several style and lint fixes required after
updating RuboCop:

- Removed redundant parentheses now detected by improved
  'Style/RedundantParentheses' (1.72 and 1.75.3).
- Replaced ternary expressions with logical OR when the ternary was
  returning 'true', as flagged by 'Style/RedundantCondition' (1.73).
- Adjusted block variables to resolve new 'Lint/ShadowingOuterLocalVariable'
  offenses (1.75), helping avoid future conflicts during upgrades with
  'rails app:updates'

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

app/components/admin/poll/shifts/form_component.rb

@@ -20,7 +20,7 @@ class Admin::Poll::Shifts::FormComponent < ApplicationComponent
     def shift_vote_collection_dates
       return [] if voting_polls.blank?
 
-      date_options((voting_start_date..voting_end_date), Poll::Shift.tasks[:vote_collection])
+      date_options(voting_start_date..voting_end_date, Poll::Shift.tasks[:vote_collection])
     end
 
     def shift_recount_scrutiny_dates