dep: bump rubocop-rspec, solargraph and rubocop

Can't show this merge request because the source branch dependabot-bundler-rubocop-rspec-and-solargraph-and-rubocop-2.0.1 is missing from project georgekoltsov-multiple-projects-test-5/imported-project-ef029319134ab099. Close this merge request or update the source branch.